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  • American Institute of Physics (AIP)  (7)
  • 1
    Electronic Resource
    Electronic Resource
    Efficient Er3+-doped optical fiber amplifier pumped by a 1.48 μm InGaAsP laser diode (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 54 (1989), S. 295-297 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Optical gain characteristics of an Er3+ -doped silica fiber have been studied by end pumping with a 1.48 μm InGaAsP high-power laser diode. A gain as high as 12.5 dB was obtained for an absorbed pump power of 16 mW with a 3-m-long fiber. By constructing an Er3+ fiber ring cavity with a 3 dB single-mode fiber coupler, we have obtained continuous wave laser oscillation at a wavelength of 1.553 μm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.101448
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  • 2
    Electronic Resource
    Electronic Resource
    Pumping wavelength dependence on gain factor of a 0.98 μm pumped Er3+ fiber amplifier (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 55 (1989), S. 2573-2575 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Gain characteristics of an Er3+-doped fiber are investigated with different pump wavelengths using a tunable Ti:sapphire laser in the 0.98 μm band. Maximum gain was obtained at a pump wavelength of 0.980 μm and the gain profile can be fully explained in terms of the pump absorption spectrum. The 3 dB gain bandwidth for the pump wavelength was 10–14 nm. A gain coefficient of 2.6 dB/mW was obtained for a 60 ppm Er3+-doped fiber with an absorbed pump power of 9 mW.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.101982
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  • 3
    Electronic Resource
    Electronic Resource
    Wavelength multiple soliton amplification and transmission with an Er3+-doped optical fiber (1989)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 66 (1989), S. 2803-2812 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Gain characteristics of an Er3+ -doped fiber for high-power picosecond input pulses are studied with an InGaAsP laser diode pump source at 1.46–1.48 μm. The output energy and peak power of the amplified pulses reach as high as 7.9 pJ and 792 mW for a repetition rate of 100 MHz and a pulse width of 10 ps. The gain saturation is so slow that the gain in high-speed pulse transmission systems is determined by a steady-state saturated gain. With the Er3+ -doped fiber amplifier, it is shown that solitons can be amplified and transmitted over a long dispersion-shifted fiber by using the dynamic range of an N=1 soliton. Furthermore, optical solitons at wavelengths of 1.535 and 1.552 μm have been amplified and transmitted simultaneously over 30 km with an Er3+ -doped fiber repeater for the first time. The collision experiments between these different wavelength solitons is described. It is shown that there is a saturation-induced cross talk between multichannel solitons, and the cross talk (the gain decrease) is determined by the average input power in high bit-rate transmission systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.344208
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  • 4
    Electronic Resource
    Electronic Resource
    Recent progress in soliton transmission technology (2000)
    Woodbury, NY : American Institute of Physics (AIP)
    Chaos 10 (2000), S. 486-514 
    Details
    ISSN: 1089-7682
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Recent progress on time-division multiplexed (TDM) and wavelength-division multiplexed (WDM) soliton transmission is described, in which dispersion management plays an important role in increasing the power margin and the dispersion tolerance. The characteristics of the dispersion-managed soliton are compared with those of return to zero and nonreturn to zero pulses. With a small dispersion swing, the system can still be described as an average soliton using the nonlinear Schrödinger equation, while with a large dispersion swing, the solitonlike steady-state pulse becomes a chirped Gaussian pulse, in which the governing equation is closer to a linear Schrödinger equation with a parabolic potential well. We describe an in-line modulation scheme for up to 80 Gbit/s per channel and its two channel WDM transmission over 10 000 km. Finally, we describe 640 Gbit/s (40 Gbit/s×16 channels) WDM soliton transmission over 1000 km with a dispersion-managed single-mode fiber. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1311394
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  • 5
    Electronic Resource
    Electronic Resource
    Femtosecond erbium-doped optical fiber amplifier (1990)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 57 (1990), S. 653-655 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A gain of 9 dB has been obtained in an erbium-doped optical fiber amplifier for input pulses with a peak power of 30 W, an average power of 30 μW (−15.2 dBm), and a pulse width of 260 fs. When the input peak power is increased in the soliton power regime, an adiabatic soliton narrowing occurs due to the optical gain. By increasing the pump power further, an optical gain enhanced soliton self-frequency shift dominates, which is due to the excitation of high-order soliton. Thus, soliton narrowing from 250 to 60 fs is observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.104102
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  • 6
    Electronic Resource
    Electronic Resource
    Pump wavelength dependence of the gain factor in 1.48 μm pumped Er3+-doped fiber amplifiers (1990)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 56 (1990), S. 1611-1613 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Gain characteristics of Er3+ -doped fibers for different pump wavelengths between 1.455 and 1.510 μm are investigated to obtain the optimum pump wavelength. It is found that the efficient pump wavelengths are located in the 1.460–1.475 μm range for Er3+ -doped Al2 O3 -GeO2 -SiO2 and Er3+ -doped GeO2 -SiO2 fibers, where a maximum gain of about 27 dB was obtained with an absorbed pump power of 31 mW.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.103141
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  • 7
    Electronic Resource
    Electronic Resource
    Ultra-efficient erbium-doped fiber amplifier (1990)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 57 (1990), S. 2635-2637 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The gain and saturation characteristics of 0.98 μm and 1.48 μm pumping are investigated for an erbium-doped fiber amplifier with a mode field diameter of 4.8 μm, and a relative refractive index difference of 1.67%. Gain coefficients of 10.2 dB/mW at 0.98 μm pumping and 5.1 dB/mW at 1.48 μm pumping are obtained. The saturation output power is +12 dBm with a launched pump power of 50 mW for 1.48 μm pumping. The energy conversion efficiency at 1.48 μm pumping reaches as high as 71%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.103831
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