Journal ArticleDOI
Switches and frequency converters based on cross-gain modulation in semiconductor optical amplifiers
D.D. Marcenac,Antonio Mecozzi +1 more
TLDR
In this article, the large-signal theory of frequency converters based on cross-gain and cross-phase modulations in a semiconductor optical amplifier is developed, for the case in which pump and probe are injected from the same facet (co-propagating case).Abstract:
The large-signal theory of frequency converters based on cross-gain and cross-phase modulations in a semiconductor optical amplifier is developed, for the case in which pump and probe are injected from the same facet (co-propagating case). Simple expressions for the bandwidth of cross-gain modulation are derived for single and cascaded SOA's, and large-signal simulations are carried out for cascaded SOA's, pointing out some important system issues. In the cascaded case, the effect of the loss between the SOA's is highlighted.read more
Citations
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Journal ArticleDOI
Cross-phase wavelength conversion of SCM signals: harmonic and intermodulation distortion analysis
TL;DR: In this paper, a corrected equation is presented and the results computed in the paper are not affected by this error since numerical simulations and comparisons were made with the correct equations, and the authors have observed a couple of errors which affect equation (9).
Proceedings Article
Outband optical modulation technique for measuring intrinsic dynamics of semiconductor optical amplifier
Martin H. Hu,Catherine Caneau,Xingsheng Liu,Nobuhiko Nishiyama,Hong Ky Nguyen,Herve P. LeBlanc,N. Leblanc,Chung-En Zah +7 more
TL;DR: In this paper, a practical technique using outband optical intensity modulation is demonstrated for measuring an SOA's dynamic response for the first time, and a significant difference in co-and counter-propagating the pump with signal is observed and explained.
Dissertation
Investigation of the regenerative and cascadability properties of optical signal processing devices at high bit-rates.
TL;DR: In this article, the authors investigated the effects of inter-band nonlinear effects in SOA gates and showed that a trade-off exists between the transmission signal Q-factor and the inter-regenerator spacing, which depends on the regenerator transfer function characteristics and can be predicted from the SOA parameters.
Journal ArticleDOI
Wavelength Conversion in Tapered-waveguide Laser Diode Amplifiers
H. Ghafouri-Shiraz,B. H. Lo +1 more
TL;DR: In this paper, a linear tapered-waveguide semiconductor laser amplifiers (SLAs) with a very long cavity length of 2400 μm is compared with a non-tapered SLA with the same cavity length.
References
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Journal ArticleDOI
Self-phase modulation and spectral broadening of optical pulses in semiconductor laser amplifiers
Govind P. Agrawal,N.A. Olsson +1 more
TL;DR: In this paper, the effect of the shape and the initial frequency chirp of input pulses on shape and spectrum of amplified pulses is discussed in detail and the case in which the input pulsewidth is comparable to the carrier lifetime so that the saturated gain has time to recover partially before the trailing edge of the pulse arrives.
Journal ArticleDOI
Small-signal analysis of wavelength conversion in semiconductor laser amplifiers via gain saturation
TL;DR: In this article, the authors analyzed the wavelength conversion due to gain saturation in a traveling wave semiconductor laser amplifier using a small-signal model and showed that the small-Signal bandwidth of wavelength conversion is not limited simply to the carrier modulation bandwidth, but also depends on the single-pass gain of the device.
Journal ArticleDOI
Small-signal theory of wavelength converters based on cross-gain modulation in semiconductor optical amplifiers
TL;DR: In this article, the exact closed form solution of the coupled-mode equations describing frequency converters based on cross-gain modulation in semiconductor optical amplifiers is given, and it is shown that the frequency response of the converter is strongly affected by the waveguide internal loss.
Journal ArticleDOI
Bandwidth enhancement of wavelength conversion via cross-gain modulation by semiconductor optical amplifier cascade
TL;DR: In this paper, the authors show experimentally and theoretically that the bandwidth for wavelength conversion through cross-gain modulation varies approximately linearly with the length of the amplifier, and that by cascading two similar semiconductor optical amplifiers, the small-signal wavelength conversion bandwidth is doubled.
Related Papers (5)
Self-phase modulation and spectral broadening of optical pulses in semiconductor laser amplifiers
Govind P. Agrawal,N.A. Olsson +1 more