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  (2,025)
  • Springer  (2,025)
  • American Physical Society (APS)
  • Blackwell Publishing Ltd
  • 1975-1979  (2,025)
  • 1979  (991)
  • 1977  (1,034)
  • Electrical Engineering, Measurement and Control Technology  (2,025)
Collection
  • Articles  (2,025)
Source
Publisher
Years
  • 1975-1979  (2,025)
Year
Journal
Topic
  • 1
    Electronic Resource
    Electronic Resource
    Calculation and optimization of parameters of radiating distributed feedback structures (1979)
    Springer
    Optical and quantum electronics 11 (1979), S. 11-22 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract A simple method is suggested for calculation of reflection, radiation and transmission coefficients for the distributed feedback structure in the second diffraction order. The method is based on a slight difference between coefficients of reflectionR and radiationI of the surface wave for λ=λ∞ (where λ∞ is the light wavelength corresponding to a precise resonance for the grating length I→∞) and those for λ=λl (where λl is the light wavelength corresponding to the resonance for the finite grating length). The simplicity of the method makes it possible to use it for optimization of the distributed feedback structure by a number of parameters. The technique can be used in the case of thin-film and diffused waveguides for both TE and TM modes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00624054
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Curvature and microbending losses in single-mode optical fibres (1979)
    Springer
    Optical and quantum electronics 11 (1979), S. 43-59 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Curvature of a single-mode optical fibre gives rise to two principal forms of additional transmission loss, namely transition loss and pure bend loss. The transition loss and the associated ray radiation, which have been observed at the beginning of a bend, can be satisfactorily explained by a modified coupled-mode theory. The radiation modes are represented by a quasi-guided mode having an average propagation constantβ e. The introduction of a gradual change of curvature reduces the transition loss much more than the pure bend loss. Analysis of the microbending loss shows that the transition component is a maximum at a given correlation length which can be simply expressed in terms ofβ e. The contributions of both transition and bend components to the total microbend loss have been derived for the case of a randomly-curved fibre for several autocorrelation and density functions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00624057
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Temperature dependent characteristics of a PIN avalanche photodiode (APD) in Ge, Si and GaAs (1979)
    Springer
    Optical and quantum electronics 11 (1979), S. 109-117 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract A theoretical assessment is presented based on a modification of Baraff's theory in order to compare the temperature dependence of several characteristics, including breakdown voltage, excess noise factor, effective ionization rate ratio and efficiency in Ge, Si and GaAs PIN avalanche photodiodes. The temperature coefficient of avalanche breakdown voltage in a high field region is studied. Finally the response time of a PIN APD in these materials is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00624389
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    On the role of SRS in the transmission of intense laser light through silica-fibre light-guides (1979)
    Springer
    Optical and quantum electronics 11 (1979), S. 141-146 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The transmission of high power laser radiation through optical fibres is limited by the onset of stimulated Raman scattering (SRS). The possibility of improved transmission through the use of selective doping is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00624392
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Detection of binary images in noise (1979)
    Springer
    Optical and quantum electronics 11 (1979), S. 133-140 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract Detection of binary images in noise is considered in the light of statistical detection theory, with particular reference to information storage systems. The different disturbances are classified into system noise and transparency noise. The receiver operating characteristics (ROC) have been obtained when the scanned binary image is corrupted by additive white Gaussian noise and multiplicative speckle. It is shown that improvement in ROC with signal-to-noise ratio (SNR) is less pronounced in the presence of speckle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00624391
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Effect of coherence of generating radiations on optical parametric up conversion (1979)
    Springer
    Optical and quantum electronics 11 (1979), S. 287-295 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The effect of the coherence properties of pumping and input radiations on parametric up conversion (PUC) is treated in this paper. It is shown here that the PUC depends essentially upon the coherence properties of the pumping radiation whilst it is hardly affected by the coherence properties of the input radiation. It has been found that for chaotic (Gaussian) pumping radiation with an extremely high degree of coherence the total conversion efficiency is one half of that for coherent (Poisson) pumping radiation, whilst for chaotic pumping radiation with a very low degree of coherence the PUC is much more effective. The influence of the coherence properties of pumping radiation upon the PUC is explained by the intermodal correlation effects in the nonlinear interaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619362
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    A simple and reliable atmospheric pressure nitrogen laser (1979)
    Springer
    Optical and quantum electronics 11 (1979), S. 276-277 
    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/BF00620114
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Theory of optical waveguides (1979)
    Springer
    Optical and quantum electronics 11 (1979), S. 283-286 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract This report summarizes the activities at the 3rd International Workshop on Optical Waveguide Theory, held at the Scuola Superiore Guglielmo Reiss Romoli, L'Aquila, Italy, on 9–11 September, 1978.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619361
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Contrast ratio variation caused by radiation attenuation in pulse width measurement by two-photon absorption fluorescence (1979)
    Springer
    Optical and quantum electronics 11 (1979), S. 297-304 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract In the technique for measuring pulse width by two-photon absorption fluorescence, theoretical calculations indicate that one can hope to obtain a maximum contrast ratio of three between the point at which the two peaks overlap and the point at which there is no superposition. Nevertheless, this calculation has been carried out assuming that the pulse is not attenuated as it traverses the fluorescent medium. In this paper it will be shown that this attenuation gives rise to a decrease in the contrast ratio. As the fluorescence intensity is proportional to the absorption, an increase in the former will be to the detriment of the contrast ratio. We will attempt to give a criterion for the selection of experimental conditions which lead to maximum intensity without an appreciable decrease in the contrast ratio.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619363
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    The thermal properties of a single-heterostructure laser diode supplied with short current pulses (1979)
    Springer
    Optical and quantum electronics 11 (1979), S. 319-327 
    Details
    ISSN: 1572-817X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract The analysis of the heat spreading in the single-heterostructure GaAs-Ga1-x Al x As laser diode supplied with short current pulses (in the case, however, when the adiabatic approximation is no longer valid) at room temperature is presented in this paper. Relations are derived, describing the time-dependent temperature rise within the volume of the laser diode. The calculations are carried out for a typical SH laser diode. It turns out that in the duration of the short current pulses (t I=200 ns,j=1.5 × 104A cm−2) the increase in junction temperature of the typical SH laser diode amounts to about 6.1 K. This increase leads to an increase of about 9% in the threshold current, to a decrease of about 18% in the laser radiation intensity, and to a shift of the spontaneous radiation band and of the stimulated radiation modes of about 1.9 nm and 0.22 nm, respectively, during each current pulse.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00619365
    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...