ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Articles  (1,036)
  • Other Sources
  • Springer  (1,036)
  • American Chemical Society
  • American Geophysical Union (AGU)
  • American Meteorological Society
  • Wiley-Blackwell
  • 2020-2024
  • 2020-2022
  • 2015-2019
  • 1980-1984  (1,036)
  • 1950-1954
  • 1935-1939
  • 1925-1929
  • 1983  (1,036)
  • Electrical Engineering, Measurement and Control Technology  (802)
  • Philosophy  (234)
Collection
  • Articles  (1,036)
  • Other Sources
Source
Publisher
Years
  • 2020-2024
  • 2020-2022
  • 2015-2019
  • 1980-1984  (1,036)
  • 1950-1954
    • +
Year
Journal
Topic
  • 1
    Electronic Resource
    Electronic Resource
    Linear feedback system design (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 35-44 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Via fractional representation methods, this paper tries to clarify the role of various conditions used in the feedback system design and stability with respect to the well-posedness of the system, the existence of a solution for stability and design, and the parameterization of the set of complete solutions. The design criterion for stable feedback system design can be used for filters design, as shown in Section 5. Systems to be considered in this paper include the linear time-varying case and results can easily be extended to the case where systems do not have the same number of inputs and outputs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01598142
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    On the existence of self-excited oscillations in systems with discontinuous elements (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 57-76 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Conditions are established which ensure the existence (or non-existence) of limit cycles in feedback systems containing discontinuous elements or elements with hysteresis. The results are applied to a specific example.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01598144
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Consistent initial conditions for singular nonlinear systems (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 45-55 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Conclusion A necessary condition for consistent initial conditions for singular nonlinear systems has been discussed. It is shown that for linear systems or systems of index less than three these conditions are equivlaent to previously reported results. However, for nonlinear systems of index greater than two these new conditions correct those previously reported. One consequence is that Euler's method may fail to estimate solutions for some semi-state equations. R. W. Newcomb's provision of an earlier version of [14] and subsequent correspondence is gratefully acknowledged.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01598143
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Scattering and admittance matrices of SAW transducers (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 161-177 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Thep-plane scattering and admittance matrices of SAW transducers consisting ofn equal sections modeled through the hybrid equivalent circuit are explicitly calculated. The results are specialized to the in-line and crossed-field models, and the technique is developed for unequal section transducers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599156
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    On the properties of linear spectral transformations for 2-dimensional digital filters (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 203-211 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract A set of eight linear spectral transformations which can be used in the design of two-dimensional digital filters is studied from a group-theoretic point of view. Several properties of the transformations, some of them known and some of them new, are deduced and are then applied in the implementation of 2-D digital filters. It is shown that trade-offs exist which can be used to reduce either the amount of memory required for the programming or the amount of data manipulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599159
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    A new negative resistance oscillator model (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 213-238 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract A physically justifiable mathematical model is proposed for a class of current-controlled, negative resistance oscillators having terminal characteristics which are poorly represented by the van der Pol, Scott, and Ceschia-Zecchin equations. Such resonators are typified by the monolithic emitter-coupled astable multivibrator (ECAM). A unique, three-parameter equation, based on the inverse hyperbolic tangent, is matched to the ECAM voltage-current curve. Using the method of Kryloff and Bogoliuboff, the transient and steady-state behavior of the ECAM is derived for oscillation with single-mode and double-mode LCR networks under quasi-linear conditions. An expression for the time of amplitude build-up and decay is derived. A phase plane is constructed for the double-mode case, yielding a system apparently free of simultaneous modes. The validity of the model is experimentally verified for quartz-controlled ECAM devices. The analysis results are extendable ton resonant modes and may be generalized to voltage-controlled devices.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599160
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    High-resolution spectral analysis using multiple-interval adaptive prediction (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 421-443 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The problem of adaptively detecting two sinusoids corrupted by noise is considered, with emphasis on resolution properties. The approach is to form a spectral estimate from the coefficients of a Δ-step-ahead adaptive predictor. A theoretical analysis reveals that attention to the choice of the prediction horizon Δ gives a distinct improvement in the spectral estimate and in the resolution of the signals. The theoretical results are illustrated with numerical examples. Comparisons with previously suggested techniques are also made.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599163
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    ARMA spectral estimation based on partial autocorrelations (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 341-360 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract This paper presents a new method for estimating the coefficients of autoregressive moving-average parameters of stationary time series. The method is based on computing the sample autocorrelations of the given time series and fitting an ARMA model so as to approximate the partial autocorrelations in a least-squares sense. When the given time series are characterized by spectral zeroes near the unit circle, they tend to have relatively long sequences of nonzero partial autocorrelations; hence the new method is especially effective in such cases. This paper contains a derivation of all necessary mathematical details, as well as several numerical examples illustrating the performance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599075
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Feedback system design: The single-variate case — Part II (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 3-34 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Summary of Part I The present article represents a survey of a new frequency domain approach to the feedback system design problem. Although the theory applies to the general multivariate case and, in fact, much of the theory can be extended to a general ring theoretic setting for the purpose of the present exposition we will restrict ourselves to the single-variate case wherein the simple algebraic nature of the new theory is most readily apparent. In Part I1 we introduced the concept of a stable rational fractional representation for a feedback system and derived an asymptotic design theory therefrom. This included a complete parameterization for the set of compensators which stabilize the system under appropriate tracking and/or disturbance rejection constraints. Moreover, expressions for the feedback system gains of the resulting system which are linear (actually affine) in the underlying design parameter are obtained. As such, the process of choosing a specific design within this set to meet additional specifications is greatly simplified. In Part II we investigate a number of these constraints. These include the robust design problem, transfer function design, the pole placement problem, the simultaneous design problem, and the problem of designing a stable stabilizing compensator.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01598141
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    On the anti-sidetone telephone circuit (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 99-117 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The anti-sidetone telephone circuit is a frequency-independent passive reciprocal 3-port whose scattering matrix between three prescribed resistive terminations (transmitter, receiver, line) meets a certain specification. In their 1920 paper, Campbell and Foster (CF) showed that the prescribed 3-port can be realized as a lossless 4-port consisting in two 3-winding transformers closed on one resistance (the balancing network). If one (two) relations are imposed between the terminating resistances of the 4-port, realizations involving a single 3-winding (2-winding) transformer are available, and the resulting 136 (38) distinct realizations have been listed by CF. In this paper, we reestablish the CF-results (which were stated almost without proof in their paper and have never been rediscussed in the literature) and present a genetic classification of their 136 + 38 circuits. Recently, a realization of the anti-sidetone 3-port containing more than one internal resistance (in addition to the balancing network, a light-emitting diode serves to illuminate the dial) has been described by D. R. Means; in this paper, we present a complete characterization of that wider class of circuits.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01598147
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 11
    Electronic Resource
    Electronic Resource
    A semi-nonsingular sampled data model of a delayor (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 155-160 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract A differential operational amplifier with reverse switched and fixed capacitors produces a semi-nonsingular sampled data system which leads to a delayed sample and hold signal. Such a device can be suitably applied to a compensating resonant low-pass filter which is derived within theclass of Rader-Gold transforms. The resonant low-pass filter application demonstrates that analog transfer functions with bounded spectrums can be converted to accurate digital spectrum counterparts without pole-zero decompositions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599155
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 12
    Electronic Resource
    Electronic Resource
    Realization of a multivariable positive real function with polynomial derivative being a reactance function (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 239-253 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Multivariable positive real functions whose polynomial derivatives are reactance functions — a characteristic not possible in the case of single-variable positive real functions — are discussed. It is shown that the input impedances of certain cascaded multivariable networks belong to this class. Necessary and sufficient conditions for a multivariable positive real function with unity degree in each variable to be the input impedance of a resistively-terminated cascade of two lossless two-ports in mutually exclusive variables and separated by a series inductor or a shunt capacitor in another variable are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599161
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 13
    Electronic Resource
    Electronic Resource
    One canonical form for higher-index linear time-varying singular systems (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 311-326 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract One form of the singular systemAx′+Bx=f is considered. The analytic solution, perturbation, and numerical solution of this form are examined. A class of systems which may be transformed into this form without altering these properties is characterized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599073
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 14
    Electronic Resource
    Electronic Resource
    An infinite impulse response lattice filter for adaptive line enhancement (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 391-420 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The least-squares lattice filter is used to implement an infinite-impulse-response adaptive filter for the enhancement of narrowband signals in the presence of white or finitely correlated noise. The advantages of infinite impulse response filters for adaptive line enhancement are discussed. The performance of the proposed technique is illustrated by simulation results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599162
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 15
    Electronic Resource
    Electronic Resource
    New realization of inductances for switched-capacitor filters using voltage inverter switches (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 469-485 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract This paper describes a new design method of inductance simulation for switched-capacitor (SC) filters based on the VIS-SC concept. The resulting circuits have not only the excellent sensitivity behavior of VIS-SC filters, but also the low sensitivity to the main parasitics occuring in the MOS integrated circuit, i.e., the parasitic capacitances between the bottom plates of the implemented capacitors and substrate. As examples, a sixth-order band-pass and a sixth-order band-stop elliptic filter transformed from a third-order low-pass are given. Experimental results agree very well with theory. A brief analysis is given of certain parasitic effects in band-stop filters at the Nyquist frequency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599165
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 16
    Electronic Resource
    Electronic Resource
    Editorial (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 1-2 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01598140
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 17
    Electronic Resource
    Electronic Resource
    The order of complexity of RLC-nullor networks (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 89-98 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract An upper bound on the order of complexity of a solvable RLC-nullor network is found.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01598146
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 18
    Electronic Resource
    Electronic Resource
    Envelope-constrained filters with uncertain input (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 131-154 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract In an envelope-constrained filtering problem with uncertain input the set of possible input waveforms and the set of permissible output waveforms are each defined by envelope constraints (time domain inequalities). The object is to find the optimal (minimal norm) inpulse response for which every waveform in the input envelope evokes a response in the output envelope. The problem is solved by extending earlier results for a single specified input. The solution is further extended to allow for unknown-but-bounded errors in the filter realization.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599154
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 19
    Electronic Resource
    Electronic Resource
    Cascade realization of 2-D separable in denominator filters (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 193-201 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract After selecting the most suitable model for the class of two-dimensional quarter-plane-causal, recursive, and separable in denominator (CRSD) filters, a procedure for realizing a cascade system of such filters is developed. The realization utilizes the individual CRSD models constituting the cascade system. An example is given to further illustrate the technique.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599158
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 20
    Electronic Resource
    Electronic Resource
    On an aspect of matched filters in continuous and discrete time (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 269-276 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract In this paper we present an approach for improving the output signal-to-noise power ratio of a discrete-time matched filter by employing a continuous-time filter, even though the continuous-time signal input is imperfectly known. It is shown that is it possible to design a continuous-time filter which is robust to inexact knowledge of the signal input; moreover, the robustness property does not severely compromise performance. In fact, it is shown that the resulting filter possesses an output signal-to-noise power ratio which upper bounds that of the discrete-time filter.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599070
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 21
    Electronic Resource
    Electronic Resource
    An alternate technique for min-max design of multiband finite impulse response digital filters (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 285-309 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The practical issue addressed in this paper is the automated design of FIR multiband digital filters. The specific theoretical filter-design problem addressed is what to do over the transition regions if a min-max design criterion is adopted. The technique suggested consists of formulating the design over the entire band [0,π]. Advantages and disadvantages of this approach versus the use of “don't care” bands are examined. Specific comparisons pertaining to FIR multiband design are presented. The specific contribution of the paper is twofold: (i) A suggestion for the type of functions to use as an objective over the transition regions if a full band [0,π] min-max formulation is to be used. (ii) A design technique for multiband FIR which appears useful in a CAD context. This technique gives results comparable to those obtained with the “don't care” band approach. However, the new procedure requires less user interaction and is thus much easier to automate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599072
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 22
    Electronic Resource
    Electronic Resource
    Optimum FIR and IIR multistage multirate filter design (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 361-386 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract A theorem is introduced which is useful in deriving equivalent multirate filter structures. Frequency responses of multistage multirate filters are derived and defined by deriving their equivalent one-stage filters. A design principle is proposed to reduce filtering requirements at each stage and move the filter operations to low-sampling-rate stages and thus result in a lower arithmetic rate. Optimum FIR and IIR multistage multirate filter designs are developed based on this principle. The new design has a one-point passband specification for each decimator and/or interpolator stage resulting in a wider transition region and lower filter order. Examples are given to explain the design procedure, and comparisons are made to show the superiority of the new filters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599076
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 23
    Electronic Resource
    Electronic Resource
    Source-oriented adaptive beamforming (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 487-516 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract A system concept expected to improve sonar multiple target detection and classification performance in severe directional interference environments is presented. Adaptive nulling of undesired strong interference sources and detection of desired weak sources are achieved by utilizing constrained adaptive processing techniquestogether with conventional processing techniques. The adaptive processing functions are incorporated in the overall system architecture in a manner which maintains the computational complexity and storage requirementslinearly proportional to the product of the number of interference sources and the number of adaptive weights per interference source. In addition, a detailed discussion is provided concerning the importance of certaina priori assumptions on constrained adaptive algorithm performance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599166
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 24
    Electronic Resource
    Electronic Resource
    Series expansions for nonlinear systems (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 77-87 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract In this paper we generalize recent theorems concerning the existence (and algorithms for obtaining) a power-series-type expansion for a nonlinear system's outputs in terms of its inputs. The results given here are directly applicable to a much larger class of systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01598145
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 25
    Electronic Resource
    Electronic Resource
    Maximally flat rational approximants in multidimensional filter design (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 119-128 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Explicit conditions required to be satisfied by the numerator and denominator polynomial coefficients of a magnitude-squared rational response function, ¦S21(jωi, jω2) ¦2, so that it might approximate an ideal low-pass characteristic along any straight line in the plane through (0,0) in a maximally flat manner, are obtained. The condition for attenuation along all radial directions through (0,0) is expressed in terms of the positivity of a form in two variables. The technique is easily extended to the multidimensional case and can be used to design filters other than those of the low-pass type. The theory could be used to design lumped-distributed and variable-parameter filters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01598148
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 26
    Electronic Resource
    Electronic Resource
    Expansions for discrete-time nonlinear systems (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 179-192 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Results are given concerning the existence and other properties of Volterralike input-output expansions for discrete-time systems whose inputs and outputs are defined on the time set {0,1,2,}. The results, which establish the existence of (and show how to obtain) a locally convergent input-output expansion for a very large class of systems, are along the lines of those reported recently by this writer for continuous-time systems. With regard to one of the theorems given here, new ground is broken in that the theorem directly addresses the case where the nonlinear part of the system need not be assumed to be memoryless. Systems of the kind considered arise, for example, in the area of communication channel modeling for digital data transmission.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599157
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 27
    Electronic Resource
    Electronic Resource
    Ladder networks, fixpoints, and the geometric mean (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 259-268 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Using fixed-point arguments, existence and uniqueness results are obtained for the joint resistance of infinite positive operator networks with noncommuting operators in the branches. Explicit representations for the joint resistance are given using the geometric mean of positive operators.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599069
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 28
    Electronic Resource
    Electronic Resource
    Time-domain sensitivity of digital networks (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 277-284 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Convenient matrix formulas for calculating the sensitivities of multiplier coefficients of the impulse and step responses of arbitrary digital network configurations, as given by their flow graphs, are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599071
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 29
    Electronic Resource
    Electronic Resource
    On generalized predictive compression of continuous-time signal samples (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 327-339 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract This paper presents new results for predictive compression of signal samples, based upon spectral observation. The formulation emphasizes the inherent presence of a deterministic signal model and will accommodate time-varying models and time- and signal-dependent error bounds. Transmission of predictive error residuals instead of the samples themselves is shown to be identical in structure to linear predictive coding; although additionally applicable where available stochastic signal models may be inadequate. Sample deletion, when prediction error is within a chosen bound, offers a real time compression method of particular importance to measurement and control applications.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599074
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 30
    Electronic Resource
    Electronic Resource
    Approximation of 2-D analog and digital transfer functions using doubly terminated cascade-separable network properties (1983)
    Springer
    Circuits, systems and signal processing 2 (1983), S. 445-467 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract This paper considers certain useful approximations which can be obtained by doubly terminated two-variable cascade-separable networks. Since such networks can be transformed into 2-D wave digital filters, these approximations provide useful magnitude responses in the 2-D digital domain, also. Two approximation methods are discussed, and these can produce near quadrantal symmetry.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01599164
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 31
    Electronic Resource
    Electronic Resource
    Three-wave mixing and light diffraction by transient light induced gratings for the study of fast relaxation processes (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 41-55 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The action of two successive intense ultrashort coherent light pulses with different wave vectorsk 1 andk 2 on a nonlinear inhomogeneously broadened medium is considered. The resulting spatial and temporal polarization and saturation structure is calculated within a two level density matrix approach. Without use of perturbation theory, both the dynamic behaviour of the nonlinear medium under hole burning conditions and the temporal behaviour of the output pulse in the2k 1 -k 2 direction generated by the polarization of the medium during and after the action of the second pulse are discussed. The diffraction of a third probe pulse by the saturation grating as well as by the polarization of the medium is calculated. Possibilities for measuring the longitudinal, transverse and inhomogeneous relaxation times are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620232
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 32
    Electronic Resource
    Electronic Resource
    A new method for simultaneous complex addition and subtraction (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 65-70 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract General results are given for the influence of coherence and misalignments on the complex amplitude addition and subtraction method using a holographic beam splitter. A new method for simultaneous complex addition and subtraction is also investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620234
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 33
    Electronic Resource
    Electronic Resource
    A study of multimode fibre attenuation measurement using a precision spectral radiometer and the near-field filtration technique (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 95-111 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Based on the near-field filtration formulation, the paper identifies and quantifies the most important sources of interlaboratory error in multimode fibre attenuation measurements. Measures are proposed for the reduction of these errors, and it is estimated that a lower bound of about 0.04 dB should be possible under certain assumptions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00612821
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 34
    Electronic Resource
    Electronic Resource
    Laser fluctuation studies in intensity dependent absorption of light (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 241-245 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The interaction of a laser with an intensity-dependent absorber has been analysed for discrete regions of operations of the laser. It is shown that the beam is thermally defocused due to absorption for the values of intensity under consideration. The fluctuation properties have been analysed by evaluating 〈I〉,〈I 2〉 and 〈(ΔI)2〉/〈I〉2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619934
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 35
    Electronic Resource
    Electronic Resource
    Actively coupled index-guided lasers (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 247-252 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract An opto-electronic device is described in which two index-guided semiconductor lasers are actively coupled by means of a control injection current. The behaviour of the device under differing conditions of optical injection is examined. It is shown to be possible to find light-sensitive and light-insensitive configurations for device operation. The control current can be used to tune the sensitivity of the device.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619935
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 36
    Electronic Resource
    Electronic Resource
    Real-time edge enhancement in four-wave mixing with photorefractive BGO crystals (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 269-273 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619938
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 37
    Electronic Resource
    Electronic Resource
    Self-heating effects in electro-optic light modulators (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 289-295 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The performance of an electro-optic light modulator under high average laser power is studied theoretically and experimentally. Absorption of laser radiation produces a thermal gradient in the electro-optic crystal which degrades the performance of the modulator. Measurements on modulators using KDP and KD*P crystals support the analytical results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619898
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 38
    Electronic Resource
    Electronic Resource
    Above-threshold current leakage effects in stripe-geometry injection lasers (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 371-379 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Lateral current-spreading in stripe-geometry injection lasers is treated in the above-threshold range of device operation. The model represents an extension of previous formalisms which have concentrated on analysing current leakage in the absence of lasing action. The present analysis is used to examine the characteristics of devices with a range of current-spreading parameters and is suitable for assessing the significance of current leakage effects, particularly for mode-stability properties, in stripe-geometry lasers. Furthermore, the description of multi-stripe-geometry lasers requires a consistent model for current-spreading in the above-threshold regime.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619859
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 39
    Electronic Resource
    Electronic Resource
    Static thermal properties of broad-contact double-heterostructure laser diodes (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 513-527 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The thermal properties of broad-contact double-heterostructure GaAs-(AlGa)As laser diodes under steady-state conditions are presented in this paper. The nonhomogeneous, layered structure of the laser diode has been reduced to the thermally equivalent, homogeneous GaAs structure. The active layer heating due to nonradiative recombination and reabsorption of radiation, the radiative transfer of spontaneous radiation through the wide-gap passive layers, and Joule heating have been taken into consideration. The temperature dependence of the GaAs thermal conductivityλ(T) has been also taken into account. The relative influence on the temperature distributions of the individual heat sources, the internal quantum efficiency of the spontaneous emission, and the thickness and the resistivities of the individual layers have been discussed. The model may be used for all broad-contact laser diodes including the high-power large-optical-cavity laser diodes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620020
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 40
    Electronic Resource
    Electronic Resource
    Picosecond duration laser pulse generation by simultaneous active-passive mode-locking in Ar+ ion and dye lasers (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 487-496 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract We use a rate equation model to analyse a technique for the generation of picosecond duration laser pulses in argon pumped dye lasers. The system is based on passive mode-locking of the Ar+ laser by saturable absorption of the dye which is inserted in the Ar+ laser cavity. Simultaneously, the dye is forced to oscillate in a regime of synchronously pumped mode-locking. The system is relatively simple, does not require the use of an acousto-optical light modulator and can be easily implemented in commercially available lasers. Pulses shorter than 100 ps and having an average power of 20 mW were obtained at a repetition rate of 110 MHz. Good agreement between the model and experimental results was also obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620017
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 41
    Electronic Resource
    Electronic Resource
    Optical parametric amplification from quantum noise (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 57-63 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract A treatment of optical parametric amplification (OPA) starting from quantum noise is presented. In order to describe the experimental situation the quantum theoretical approach is related to the propagation phenomenon taking into account the multimode character of the parametric radiation. An expression for the initial intensity occurring in the classical formula is derived.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620233
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 42
    Electronic Resource
    Electronic Resource
    On radiation modes in the time-dependent coupled power theory for optical waveguides (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 71-75 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract A derivation in terms of a statistical theory of power coupling is performed in order to estimate the effects of the radiation modes of an optical waveguide. Earlier, the loss term introduced in this theory was always of heuristic origin. In this paper, we derive an identical term from first principles. Accordingly, we find that coupling from radiation to guided modes along the waveguide can be neglected.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620235
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 43
    Electronic Resource
    Electronic Resource
    Regular and chaotic behaviour of multimode gas lasers (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 87-94 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The build-up of multimode gas laser spectra is studied on the basis of the full system of Lamb's equations of motion. Comparison is made with the results of the phase-averaged equations that constitute the so-called free-running approximation. It turns out that the range of validity of the latter is approximately given byr⪅0.5 wherer is the ratio of the homogeneous linewidth and the mode spacing (provided the former is mainly due to the decay of both the upper and the lower level). However, forr⪆2, the free-running approximation which generally predicts a steady-state spectrum to occur, breaks down. Actually, in this case multimode oscillation of a chaotic character takes place, and no steady-state regime is attained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620237
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 44
    Electronic Resource
    Electronic Resource
    Enhancement of fringe visibility in a fibre interferometer (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 137-141 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract A simple method for increasing fringe visibility of an interference pattern in a Mach-Zehnder type fibre interferometer is presented. In order to obtain high visibility, two elliptically polarized waves emitted from fibres with birefringence are transformed into two linearly polarized waves of equal amplitude and with parallel planes of polarization by using ordinary optical components. Instability of fringe patterns due to temperature fluctuation of the air surrounding the fibres is also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00612824
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 45
    Electronic Resource
    Electronic Resource
    Using the shooting method to solve boundary-value problems involving nonlinear coupled-wave equations (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 539-546 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The shooting method has been used to obtain numerical solutions of the nonlinear coupled-wave equations for degenerate four-wave mixing in a reflection geometry. The principle of the shooting method has been described in Part 1 of the paper [1]. Numerical results are obtained from computer calculations and presented in graphical form.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620022
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 46
    Electronic Resource
    Electronic Resource
    High efficiency, medium repetition rate, mini-TEA CO2 laser (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 185-186 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00612828
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 47
    Electronic Resource
    Electronic Resource
    Intracavity generation of second harmonics and sum frequences in LiIO3 crystal in an infrared He-Ne laser (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 187-191 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Several second harmonics and sum frequencies were generated in a phase-matched LiIO3 crystal placed within an optical cavity of a high-power He-Ne infrared laser operated at 1.15μm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619928
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 48
    Electronic Resource
    Electronic Resource
    4×8 optoelectronic matrix switch equipment using InGaAsP/InP heterojunction switching photodiodes (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 217-224 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract A four input-port and an eight output-port optoelectronic matrix switch using InGaAsP/InP hetero-junction switching photodiodes was fabricated and its characteristics studied. The characteristics of the broadband switching equipment, as well as those of individual components, such as the switching photodiodes, InGaAsP/InP semiconductor lasers, eight-port optical dividers and receiver circuits, are discussed from the viewpoint of analogue signal switching. The signal-to-noise ratio attained is more than 40dB for a 30MHz bandwidth television signal. Differential gain and differential phase are less than 2% and 2°, respectively, isolation is higher than 80 dB. Crosstalk between adjacent channels is suppressed below-60 dB over the band between d.c. and 100 MHz by a simple metallic shield at the input and output electric circuits.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619931
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 49
    Electronic Resource
    Electronic Resource
    Dynamical thermal properties of broad-contact double-heterostructure GaAs-(AIGa)As laser diodes (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 313-324 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The dynamical thermal properties of broad-contact double-heterostructure GaAs — (AIGa)As laser diodes are presented in this paper. For short current pulses (t ≪ 0.5μs), the nonlinear, time-dependent thermal conduction equation has been reduced to a linear one by means of a space transformation. The transformation has substituted the nonhomogeneous GaAs — (AIGa)As structure by the homogeneous GaAs one. Except for active layer heating due to nonradiative recombination and partial reabsorption of radiation, the radiative transfer of the spontaneous radiation through the wide-gap passive layers and the Joule heating effect have been taken into account. The model may be used to some extent for high-power stripe-geometry laser diodes with a relatively wide stripe active region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619901
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 50
    Electronic Resource
    Electronic Resource
    Progress of coherent optical fibre communication systems (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 1-39 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The recent progress of coherent optical fibre communication systems is reviewed. System constituent technologies, such as coherent optical modulation-demodulation, optical direct amplification for repeaters and single polarization fibre transmission are outlined. Several important optical device technologies, such as frequency stabilization of semiconductor lasers, AM and FM quantum noise and their reduction, and integrated opto-electronic devices, are also described. Finally, on the basis of the current state of the art in these technological areas, the expected system performance and future problems are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620231
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 51
    Electronic Resource
    Electronic Resource
    A numerical technique for the determination of propagation characteristics of inhomogeneous planar optical waveguides (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 77-85 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract A numerical method, using the Ritz-Galerkin approach has been applied to the problem of determining the propagation characteristics of inhomogeneous planar optical waveguides. It is shown that very accurate results are obtained for mode spectra and field distributions when compared with the predictions of other exact or approximate methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620236
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 52
    Electronic Resource
    Electronic Resource
    Mode effects in second harmonic generation and their uses for laser stabilization (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 113-118 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The influence of laser modes on second harmonic generation has been investigated using a three mode He-Ne laser operating at 633 nm as the source of the fundamental radiation. Mode locking which occurs when the laser modes are symmetrically placed relative to the centre of the gain profile enhances the second harmonic signal. This effect has been used to stabilize the frequency of the He-Ne laser to ± 1.5 MHz.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00612822
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 53
    Electronic Resource
    Electronic Resource
    Effects of joints on mode power distribution and losses in multimode optical fibres (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 143-153 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The transformation of mode power distribution at a joint between two different (even elliptical) optical fibres is studied. Simple analytical expressions are obtained also in the most general coupling and mismatch configuration, provided that coupling errors and mismatch parameters are small. Detailed calculations of joint losses are performed in each case, including propagation effects in both fibres. Original results are obtained particularly in the cases of misalignment, end separation between the fibres, mismatches in index profiles and coupling between two elliptical fibres. A strong dependence on the launching conditions and the amount of mode coupling is evidenced in all cases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00612825
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 54
    Electronic Resource
    Electronic Resource
    Application of nonlinear oscillator theory to multimode fibres (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 173-184 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract By returning to the ray path equations and using mathematical methods taken over from the theory of nonlinear oscillators, we derive a new formalism for calculating transit times in power-law fibres with small additional refractive index profile perturbations. The formalism has the following important attributes: the structure is simple, the unperturbed fibre analytic result plus a separate term explicitly related to the perturbation; the results are wholly analytical in many cases of interest; and in contrast to older methods, the only integrals to be evaluated have well-behaved integrands involving only the profile perturbation function and they can be evaluated easily using experimental data points. The extension to perturbations varying along the fibre length is made and the analytic form of the result, again explicitly exhibiting the influence of the perturbations, enables us to observe quite generally that perturbations which average out to zero over the fibre length will have a minor effect on individual times and hence pulse dispersion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00612827
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 55
    Electronic Resource
    Electronic Resource
    Mode energy transformation between two connected multimode general square-law-index optical waveguides (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 193-207 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract A coherent states method is used to investigate the mode coupling coefficients in the most general buttjoint problem for two multimode general square-law-index optical waveguides, when two different waveguides with elliptical cross-sections are to be butt-jointed with axis displacement, tilt and some turning of symmetry axes with respect to each other. The explicit expressions for the mode coupling coefficients and recurrence relations for the mode overlap integrals are obtained; the sum rules for the mode coupling coefficients are formulated and a method of experimental data analysis is proposed for this general problem. The method of calculating mode coupling coefficients is proposed for the case of the butt-joint problem when the waveguide cross-sections are only partially overlapping and then it is used to investigate the influence of misalignment on mode power distribution and pulse dispersion in the second waveguide. The experimental data are compared and it is shown that the coupling coefficients obtained in square-law-index model can be used in dispersion calculations forα-profile fibres in the case when the valueα is not far from the valueα=2.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619929
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 56
    Electronic Resource
    Electronic Resource
    Nonlinear optical susceptibility measurement at an autoionizing-like resonance in atoms (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 305-312 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The first experimental measurement of nonlinear optical susceptibilities at a laser-induced resonance in the atomic continuum is reported. Raman amplification efficiency as well as polarization anisotropy are investigated by scanning the probe frequency near the autoionizing-like resonance. Tunable ultraviolet radiations by four-photon processes in sodium vapour near the induced resonances are obtained. Estimations of the real and imaginary parts of the nonlinearities and also of their moduli are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619900
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 57
    Electronic Resource
    Electronic Resource
    Theoretical fatigue life of helically stranded optical fibres (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 253-260 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The design of optical fibre cables currently preferred by BICC ordinarily produces little or no tension or torsion in the fibres. Bending them into helical form, however, causes a permanent stress which couid give rise to static fatigue. In a recent paper, the probability that a bent fibre will fail owing to static fatigue was calculated. The calculation is extended in the present paper to take account of proof-testing. Assuming reasonable values for the parameters, it appears that a fibre of 125μm diameter, proof-tested at 0.5% strain and subsequently bent to a radius not less than 25 mm, would certainly survive for 40 years.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619936
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 58
    Electronic Resource
    Electronic Resource
    Corrigendum (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 279-279 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619940
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 59
    Electronic Resource
    Electronic Resource
    Optically steered twin-stripe laser beam scanner (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 461-462 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619870
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 60
    Electronic Resource
    Electronic Resource
    The effects of source configuration on bandwidth and loss measurements in optical fibres (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 463-470 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Bandwidth and attenuation are not uniquely defined for multimode fibres. We present a theoretical examination of the effects on bandwidth and loss measurements of varying source configurations. Choice of source radius and numerical aperture can greatly influence the results, particularly when those parameters are chosen to be substantially less than the corresponding fibre values. Other factors such as source efficiency for exciting only bound modes and the effects of source misalignments are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620014
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 61
    Electronic Resource
    Electronic Resource
    The autocorrelation function of polychromatic laser speckle patterns near the image plane (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 507-512 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The autocorrelation function of polychromatic speckle patterns produced near the image plane of a double diffraction imaging system is experimentally studied. The condition under which the polychromatic speckle field obeys Gaussian statistics is further investigated as a function of the numberN of scattering cells, using the average contrast of the speckle intensity fluctuations. The profile of the autocorrelation function is next investigated as a function ofN and the defocused distance from the image plane. It is found that the average contrast and autocorrelation function of the polychromatic speckle intensity fluctuations converge less rapidly with an increase inN than those of the monochromatic ones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620019
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 62
    Electronic Resource
    Electronic Resource
    On the investigation of laser-induced carriers in silicon in the picosecond time range (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 477-485 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Description / Table of Contents: Zusammenfassung Es wird das zeitliche Verhalten von optisch angeregten Ladungsträgern bei linearer Rekombination und Diffusion unter Berücksichtigung der Anregungsimpulslänge untersucht. Während die Anregungsimpulslänge im Fall der linearen Rekombination erst einen merklichen Einfluß auf das Zeitverhalten der Ladungsträger gewinnt, wenn sie in die Größe der Rekombinationszeit gelangt, wird ihr Einfluß auf das Diffusionsverhalten bemerkbar, wenn sie klein gegen die Diffusionszeit ist. Die numerischen Rechnungen wurden zur Interpretation von zeitaufgelösten Reflexionsmessungen an Silizium angewandt.
    Notes: Abstract The dependence of the time behaviour of optically-induced carriers on linear recombination and diffusion is studied taking into account the exciting pulse duration. If the pulse duration becomes comparable to the carrier lifetime in the case of linear recombination the exciting pulse influences the temporal behaviour of the carriers significantly. If the temporal behaviour of the carriers is to be determined by diffusion an exciting pulse, short with respect to a characteristic diffusion time, strongly influences this behaviour. These calculations were used to fit some experimental results of time-resolved reflectivity measurements of silicon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620016
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 63
    Electronic Resource
    Electronic Resource
    Using the shooting method to solve boundary-value problems involving nonlinear coupled-wave equations (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 529-538 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Using the shooting method, one of the numerical methods to solve two-point boundary-value problems, numerical solutions of the nonlinear coupled-wave equations in degenerate two-wave and four-wave mixing can be obtained. In this first part of the paper the general shooting method is described, and then applied to two-wave mixing in a reflection geometry. Computed results are presented in graphical form. Comparison between the shooting method and the direct numerical method [1] is made also. In the second part of the paper, numerical solutions for four-wave mixing in a reflection geometry will be given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620021
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 64
    Electronic Resource
    Electronic Resource
    Multimode edge reflecting couplers (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 359-362 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619905
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 65
    Electronic Resource
    Electronic Resource
    Propagation in media with Raman-type nonlinearity: polarization states of the waves and gains (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 209-216 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The simultaneous propagation of laser and Raman waves through nonlinear media is theoretically studied using the nonlinear third-order susceptibility tensor formalism. Polarization states and gains with linearly, circularly and elliptically exciting polarizations are calculated. The theoretical expressions are compared with experimental results in the absence of self focusing. The perturbations due to self focusing near the stimulated Raman scattering thresholds are studied and conclusions concerning the anisotropy of the Kerr constant are obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619930
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 66
    Electronic Resource
    Electronic Resource
    Dispersion of tubular modes propagating in multimode optical fibres (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 225-230 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract We have already used interferometric techniques for measuring, first, the impulse response of optical fibres and further the different times of flight of modes of a multimode fibre. Apart from time of flight, our set-up provides the intramodal dispersion of each mode (d2 β/dω 2). To demonstrate, we have measured the modal dispersion difference between two tubular modes that were selectively excited in a multimode graded index fibre. For comparison, a theoretical expression has been derived, based on a ray optics approach.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619932
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 67
    Electronic Resource
    Electronic Resource
    A classification scheme for the light-current (L/I) characteristics of a two photon mode semiconductor laser (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 231-240 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The behaviour of a semiconductor laser in which two photon modes exist above threshold is analysed using the rate equations. This paper classifies the different qualitative behaviour of mode competition by using a single parameterγ. The simplified analysis, neglecting electronic diffusion is sufficient to explain the experimentalL/I characteristics of weak and strong polarization in semiconductor lasers which were previously treated theoretically using a power distribution model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619933
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 68
    Electronic Resource
    Electronic Resource
    Defocus dependence on ocean wave shape in synthetic aperture radar imagery (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 355-357 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619904
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 69
    Electronic Resource
    Electronic Resource
    Dependence of stimulated Raman threshold on the pump bandwidth (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 367-369 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619907
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 70
    Electronic Resource
    Electronic Resource
    A method of calculating the efficiency for coupling light power from a LED into an optical fibre by use of a sphere lens (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 389-396 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The use of sphere lenses of high refractive index material to improve the coupling efficiency between a light-emitting diode and an optical fibre is well known. A general method of calculating the coupling efficiency for such systems is described. The mathematical model is based on analytical geometry in vector notation. Experimental results obtained with GaAIAs-LED's and a step-index fibre are compared with the data from the theoretical evaluations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619861
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 71
    Electronic Resource
    Electronic Resource
    Bandwidth of multimode fibres with random fluctuation in the index profile: a Monte-Carlo approach (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 407-417 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Random variations of the index profile along the length of a multimode fibre are analysed by means of a Monte-Carlo technique, within the framework of the WKBJ approximation, assuming linear profile dispersion. Previous results (concerning fibres with deterministic profile variations) would suggest that very broad bandwidths could be obtained even in the presence of strong deviation from uniformity, with a suitable choice of the average profile. On the contrary, our analysis shows that similar results are obtained only under restrictive assumptions. In particular, if the random fluctuations are specified in terms of their r.m.s. deviation, then the probability of getting a broad bandwith is always significantly less than unity, no matter how accurate the choice of the average profile.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619863
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 72
    Electronic Resource
    Electronic Resource
    Calculation of equivalent step-index parameters for single-mode fibres (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 451-455 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Various methods have been used to calculate wavelength-independent equivalent step-index values of core diameter and relative refractive index difference for a non-step-index fibre. The discrepancies in the results indicate that this system of fibre description should not be used without an express statement of the mode of calculation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619868
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 73
    Electronic Resource
    Electronic Resource
    Effect of wall scattering on SNR in off-axis differential-type laser Doppler velocimetry (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 419-431 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Though various properties and applications of laser Doppler velocimetry have been extensively studied in the past decade, there is little discussion on the effect of light scattering from the surface of a cell on Doppler beat signals or on methods of reducing it. In this paper, the effect of light scattering from the surface of the cell is treated as a background noise and is studied theoretically and experimentally on the detecting process of Doppler beat signals in off-axis differential-type laser Doppler velocimetry. Laser Doppler velocimetry of an off-axis type is verified to be effective for measurement of the flow velocity in the vicinity of a scattering wall. The effect of the light scattered from the wall surface on the signal-to-noise ratio (SNR) of Doppler beat signals is discussed in detail. The minimum distance, which is close to the wall and at which good Doppler beat signals can be obtained, is defined and determined quantitatively. This minimum distance is found to be strongly affected by the off-axis angle of the detecting optical system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619864
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 74
    Electronic Resource
    Electronic Resource
    A high performance backscattering set-up using multimode light channels (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 471-475 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The utilization of multimode ion-exchanged waveguides to form an optical directional coupler for multimode fibre backscattering measurements is discussed. The optical properties of the integrated branching element are described in detail. A very high directivity of 70 dB was obtained with this new device. The dynamic range in the backscattering measurement was 23 dB fibre one-way loss.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620015
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 75
    Electronic Resource
    Electronic Resource
    Constant power contours and bistability in twin-stripe injection lasers (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 547-548 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620023
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 76
    Electronic Resource
    Electronic Resource
    Mode coupling effects in optical fibres: perturbative solution of the time-dependent power flow equation (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 119-136 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Some new aspects of the perturbative solution of the time-dependent power flow equation are investigated. The roles of the amplitude in the fibre perturbation, of the intrinsic attenuation coefficient and of the launching condition are stressed. The reaching of the steady state is studied with particular attention in order to give predictions on attenuation and bandwidth of real optical links.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00612823
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 77
    Electronic Resource
    Electronic Resource
    Extension de la representation scalaire du champ aux fibres optiques à gaine finie (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 349-353 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Description / Table of Contents: Abstract The LP mode concept, which was introduced in the weak guiding theory is extended to optical fibers with finite cladding, for cladding modes the effective index of which remains close to the cladding refractive index. A more accurate study shows how the degenerate LPmn modes split into nondegenerate HEm+1, n and EHm−1, n modes. The boundary condition to be satisfied by the scalar field on the air/fibre interface is derived; for zeroth order (LP modes), this scalar field must be zero on this interface.
    Notes: Résumé Le concept de mode LP introduit dans la théorie du guidage faible est étendu aux fibres optiques à gaine finie, pour les modes de gaine dont l'indice effectif reste voisin de l'indice de la gaine. Une étude plus précise montre ensuite comment les modes LPmn dégénérés se scindent en modes HEm+1, n et EHm−1, n non dégénérés. On indique comment écrire la condition aux limites sur l'interface fibre/air pour la fonction scalaire qui décrit le champ; à l'ordre 0 (modes LP), il suffit d'annuler cette fonction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619903
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 78
    Electronic Resource
    Electronic Resource
    Diffraction efficiency of absorption gratings (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 441-446 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The diffraction efficiency of absorption gratings is investigated using a coupled multiwave analysis. For the four-wave case the analytical expressions for the signal amplitudes are given. The applicability of the four-wave approximation is also included.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619866
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 79
    Electronic Resource
    Electronic Resource
    Real time image deblurring using four-wave mixing (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 457-459 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619869
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 80
    Electronic Resource
    Electronic Resource
    The beam propagation method: an analysis of its applicability (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 433-439 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Simple quantitative conditions for the applicability of the beam propagation method (BPM) in isotropic and anisotropic media are given. These conditions are derived using the operator formalism employed in the BPM in its conventional formulation. The basic limitations of the BPM are highlighted at the same time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619865
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 81
    Electronic Resource
    Electronic Resource
    Switching frequency for transverse modes in stripe-geometry injection lasers (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 497-506 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract An expression is obtained for the frequency of a class of oscillations occurring between mirror-image near field distributions in stripe-geometry injection lasers. Computation of the oscillation frequency indicates that values in the GHz range can occur. A means of exploiting this high speed switching is briefly indicated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620018
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 82
    Electronic Resource
    Electronic Resource
    Picosecond optical switching in semiconductor lasers (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 549-552 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00620024
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 83
    Electronic Resource
    Electronic Resource
    Statistical analysis of intrinsic joint losses in mismatched multimode fibres (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 155-171 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The effects of manufacturing variations in geometrical and optical parameters of multimode fibres on intrinsic joint losses are studied by means of a statistical approach. The analysis is performed considering different real conditions of propagation and statistical distributions of fibre parameters. The effects of a cascade of joints and of different jointing techniques are also studied. The calculations are carried out using the real tolerances recommended by the standardization organizations, through a simulation of some 500 000 joints. Except for the case of mismatch of numerical aperture (whose tolerance is relatively large) a mean joint loss of 0.07–0.2 dB and a 98th percentile of joint loss of 0.4–0.7 dB is obtained, depending on the statistical distribution of fibre parameters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00612826
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 84
    Electronic Resource
    Electronic Resource
    Lidar system for visibility monitoring (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 261-268 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract In the present paper a Lidar (light detection and ranging) system is described. It allows high-speed data acquisition of Lidar signals and meteorological parameters by means of standard instrumentation. The Lidar, controlled by a computer, utilized two laser sources (Nd: Yag and ruby), a modified Ricthey-Chretien telescope and signal detection, storage and real-time monitoring equipment. The whole system was installed in a container for field experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619937
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 85
    Electronic Resource
    Electronic Resource
    Polarization noise in single mode fibres and its reduction by depolarizers (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 281-287 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Fluctuations of the state of polarization in single mode fibres due to environmental conditions such as vibrations cause intensity noise if elements with polarization-dependent loss are inserted into the fibre system. Diffraction gratings, which are key elements for wavelength division multiplex-single mode fibre systems, exhibit a strong polarization dependence of loss. The polarization noise, originating from the combination of single mode fibres and diffraction gratings, is investigated experimentally. A drastic deterioration of the signal/noise ratio is observed, which is even more severe than modal noise with multimode fibres. Depolarizing devices, which reduce this kind of noise sufficiently, are presented and examined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619897
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 86
    Electronic Resource
    Electronic Resource
    Low efficiency diffraction by nonuniform phase gratings: a comparison of three approaches (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 297-303 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The diffraction of a slowly varying input beam incident upon a nonuniform grating is studied. Expressions for the diffracted field at the output of the grating are first derived relying on well known kinematic and coupled wave theories. A third approach based on Fourier expansions of both the input beam and the quasi-periodic grating is then introduced and shown to provide the same expression under certain simplifying assumptions. The advantages of the approach for the solution of more general problems are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619899
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 87
    Electronic Resource
    Electronic Resource
    Photon conservation in flashlamp pumped dye lasers (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 275-278 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619939
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 88
    Electronic Resource
    Electronic Resource
    Theoretical analysis of S1-state lifetime measurements of dyes with picosecond laser pulses (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 325-347 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Various methods for the determination of the S1-state lifetime of dye solutions (laser dyes and modelocking dyes) are analysed. A general model of interaction of laser light with dye molecules is presented and reduced to a dye energy level scheme of six levels. Fluorescence emission, light amplification and absorption recovery techniques are investigated theoretically and their limitations revealed. The determination of the S1-state lifetime of saturable absorbers by single picosecond pulse bleaching experiments is very thoroughly discussed. The influence of various laser and dye parameters on the bleaching experiments are analysed numerically. The results are compared with isotropic steady state two- and three-level dye models.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619902
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 89
    Electronic Resource
    Electronic Resource
    Nonlinear conversion of laser radiation in optical fibres and its applications for spectral investigation (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 363-365 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619906
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 90
    Electronic Resource
    Electronic Resource
    Combined reciprocal and non-reciprocal birefringence in optical monomode fibres (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 381-388 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract We analyse the overall birefringence which arises from the combined effects of Faraday rotation (non-reciprocal) and bending stress (reciprocal) applied to a monomode optical fibre loop. The theory is substantiated by numerical evaluations and appropriate experimental data are reported. These indicate how it is possible to build non-reciprocal birefringent components, i.e. rotators and isolators, by means of monomode coils.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619860
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 91
    Electronic Resource
    Electronic Resource
    Laser bias effect on the receiver sensitivity of passive fibre optic star bus networks (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 397-405 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract We examine in this paper the reduction in receiver sensitivity in passive fibre optic star bus networks due to the laser bias power transmitted by every terminal. Both transimpedance and high impedance preamplifier configurations using PIN and avalanche photodiodes are considered. The penalty in receiver sensitivity is examined as a function of bit rate, number of terminals, amplifier noise and the ratio of the launched laser bias power to average launched signal power. For PIN receivers the penalty has a maximum at low bit rates and falls off rapidly on either side of the maximum. In an example quoted in the paper the PIN receiver sensitivity penalty for networks with less than 50 terminals is less than 1 dB for all bit rates. The penalty for APD receivers increases with bit rate, and, in a further example, is shown to be less than 1 dB for networks with less than 50 terminals operating at bit rates lower than approximately 20 Mbit s−1. Techniques for reducing the penalty to negligible levels are also examined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619862
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 92
    Electronic Resource
    Electronic Resource
    A prism reflector of anti-resonant ring configuration (1983)
    Springer
    Optical and quantum electronics 15 (1983), S. 447-450 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Two identical prisms are combined to form an anti-resonant ring reflector, giving total reflection without the use of coatings or roof edges. When used as the total reflector in a Q-switched NdYAG laser this device has shown a damage threshold twice that of a multilayer reflector.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619867
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 93
    Electronic Resource
    Electronic Resource
    An extension of the deontic calculus DSC1 (1983)
    Springer
    Studia logica 42 (1983), S. 129-137 
    Details
    ISSN: 1572-8730
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Philosophy
    Notes: Abstract The chief aim of the paper is to extend the calculusDSC 1 (see [4]) in such a way as to satisfy all the requirements listed in [4] as well as a further stipulation — called ‘the principle of uninvolvement’ — to the effect that neither deontic compatibility nor deontic incompatibility of codes (see [2]) should be presupposed in deontic logic.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01063834
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 94
    Electronic Resource
    Electronic Resource
    Subject-predicate calculus free from existential import (1983)
    Springer
    Studia logica 42 (1983), S. 209-221 
    Details
    ISSN: 1572-8730
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Philosophy
    Notes: Abstract Two subject-predicate calculi with equality,SP = and its extensionUSP′ =, are presented as systems of natural deduction. Both the calculi are systems of free logic. Their presentation is preceded by an intuitive motivation. It is shown that Aristotle's syllogistics without the laws of identitySaP andSiP is definable withinSP =, and that the first-order predicate logic is definable withinUSP′ =.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01063841
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 95
    Electronic Resource
    Electronic Resource
    On the complexity-relativized strong reducibilites (1983)
    Springer
    Studia logica 42 (1983), S. 259-267 
    Details
    ISSN: 1572-8730
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Philosophy
    Notes: Abstract This paper discusses refinements of the natural ordering of them-degrees (1-degrees) of strong recursive reducibility classes. Such refinements are obtained by posing complexity conditions on the reduction function. The discussion uses the axiomatic complexity theory and is hence very general. As the main result it is proved that if the complexity measure is required to be linearly bounded (and space-like), then a natural class of refinements forms a lattice with respect to a natural ordering upon them.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01063845
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 96
    Electronic Resource
    Electronic Resource
    Logical operations and iterated infinitely deep languages (1983)
    Springer
    Studia logica 42 (1983), S. 243-249 
    Details
    ISSN: 1572-8730
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Philosophy
    Notes: Abstract We discuss an abstract notion of a logical operation and corresponding logics. It is shown that if all the logical operations considered are implicitely definable in a logic ℒ*, then the same holds also for the logic obtained from these operations. As an application we show that certain iterated forms of infinitely deep languages are implicitely definable in game quantifier languages. We consider also relations between structures and show that Karttunen's characterization of elementary equivalence for the ordinary infinitely deep languages can be generalized to hold for the iterated infinitely deep languages. An early version of this work was presented in the Abstracts Section of ICM '78.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01063843
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 97
    Electronic Resource
    Electronic Resource
    A decision procedure for the systemE (of entailment). I. (1983)
    Springer
    Studia logica 42 (1983), S. 139-164 
    Details
    ISSN: 1572-8730
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Philosophy
    Notes: Abstract A system of natural deduction is presented whose set of theses is identical with that of the systemE of entailment. For that system a decision procedure is described proving the decidability ofE.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01063835
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 98
    Electronic Resource
    Electronic Resource
    On some proof theoretical properties of the modal logic GL (1983)
    Springer
    Studia logica 42 (1983), S. 453-459 
    Details
    ISSN: 1572-8730
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Philosophy
    Notes: Abstract This paper deals with the system of modal logicGL, in particular with a formulation of it in terms of sequents. We prove some proof theoretical properties ofGL that allow to get the cut-elimination theorem according to Gentzen's procedure, that is, by double induction on grade and rank.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01371633
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 99
    Electronic Resource
    Electronic Resource
    Completeness theorems for some intermediate predicate calculi (1983)
    Springer
    Studia logica 42 (1983), S. 431-441 
    Details
    ISSN: 1572-8730
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Philosophy
    Notes: Abstract We give completeness results — with respect to Kripke's semantic — for the negation-free intermediate predicate calculi: (1) $$\begin{gathered} BD = positive predicate calculus PQ + B:(\alpha \to \beta )v(\beta \to \alpha ) \hfill \\ + D:\forall x\left( {a\left( x \right)v\beta } \right) \to \forall xav\beta \hfill \\ \end{gathered}$$ (2) $$T_n D = PQ + T_n :\left( {a_0 \to a_1 } \right)v \ldots v\left( {a_n \to a_{n + 1} } \right) + D\left( {n \geqslant 0} \right)$$ and the superintuitionistic predicate calculus: (3) $$B^1 DH_2^ \urcorner = BD + intuitionistic negation + H_2^ \urcorner : \urcorner \forall xa \to \exists x \urcorner a.$$ The central point is the completeness proof for (1), which is obtained modifying Klemke's construction [3]. For a general account on negation-free intermediate predicate calculi — see Casari-Minari [1]; for an algebraic treatment of some superintuitionistic predicate calculi involving schemasB andD — see Horn [4] and Görnemann [2].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01371631
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 100
    Electronic Resource
    Electronic Resource
    On the meaning of indexicals (1983)
    Springer
    Studia logica 42 (1983), S. 285-291 
    Details
    ISSN: 1572-8730
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Philosophy
    Notes: Abstract The approach adopted in the paper is based on the theory known as Montague grammar. Accepting, in general, that theory — especially in its modified version, which is due to Thomason and Kaplan — the author points out certain inadequacy in its treatment of the meaning of some indexical expressions and suggests some modification of its theoretical framework in order to avoid that shortcoming. It is claimed that to do justice to the meaning of so-called indefinite indexicals (such as “we”, “you”, “now”) two kinds of dependence of their semantic values upon the context of use must be taken into account — a semantic (or lexical) and a pragmatic (or extralexical) one.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01063847
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...