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High-Performance O-Band Quantum-Dot Semiconductor Optical Amplifiers Directly Grown on a CMOS Compatible Silicon Substrate

ACS Photonics, 2019
High gain and high saturation output power silicon-based semiconductor optical amplifiers (SOAs) are essential elements in future large-scale silicon photonic integrated circuits (PICs) to compensate for the excess power penalties that are introduced by ...
Songtao Liu   +19 more
semanticscholar   +1 more source

High-speed signal processing and wide band optical semiconductor amplifier in the optical communication systems

Journal of optical communications, 2020
This work clarifies the analysis of the theoretical study of noise and transmission gain characteristics of semiconductor optical amplifiers (SOAs), which are relevant in the novel local area optical communication systems.
Hazem M. El-Hageen   +2 more
semanticscholar   +1 more source

Gain and phase recovery of optically excited semiconductor optical amplifiers

IEEE Photonics Technology Letters, 2006
An investigation of the recovery dynamics of semiconductor optical amplifiers (SOAs) explains why the ultrafast component of the gain recovery is largely absent in the phase response. The time-resolved gain and phase dynamics of a bulk GaInAs SOA are measured using a pump-probe technique and differences between the gain and phase recoveries are ...
R. Giller, D. Cotter, Robert J. Manning
openaire   +2 more sources

Improving Optical Gain Performance in Semiconductor Quantum Dots via Coupled Quantum Shells

, 2012
Semiconductor quantum dots are of interest as optical gain media for lasing applications. Here we report on efficient, broad bandwidth optical gain in the CdSe/ZnS/CdSe quantum dot/barrier/quantum shell nanocrystal.
Eva A. Dias   +3 more
semanticscholar   +1 more source

Optical speedup at transparency of the gain recovery in semiconductor optical amplifiers

Applied Physics Letters, 2002
Experimental demonstration of optical speedup at transparency (OSAT) has been performed on a 1 mm long semiconductor optical amplifiers (SOA). OSAT is a recently proposed scheme that decreases the recovery time of an SOA while maintaining the available gain.
Benoit Deveaud   +4 more
openaire   +2 more sources

Gain compression and recovery in semiconductor optical amplifiers

SPIE Proceedings, 2007
A recently reported theory of gain recovery in semiconductor optical amplifiers (SOAs) is extended to develop approximate expressions for the gain compression and recovery time in terms of probe wavelength, unsaturated gain and device length. These results indicate (1) that the gain recovery time should be approximately inversely proportional to the
openaire   +2 more sources

Gain anisotropy in a semiconductor optical amplifier: confinement factors or material gain

Proceedings of 2004 6th International Conference on Transparent Optical Networks (IEEE Cat. No.04EX804), 2004
We show that if gain anisotropy in a bulk semiconductor optical amplifier (SOA) is attributed to different confinement factors for the TE and TM modes, the anisotropy as a function of pump current is quite different from the case when another mechanism, material gain anisotropy due to weak strain in the active layer, is the cause of anisotropy.
Wenfeng Wang, K. Allaart, Daan Lenstra
openaire   +2 more sources

Effect of uniaxial stress on optical gain in semiconductors

Journal of Applied Physics, 1984
It has been previously shown that the optical gain for impurity-band transitions is altered by stress and the results of that analysis have been used to explain the ‘‘anomalous’’ polarization characteristics of semiconductor lasers. However, in semiconductor lasers with undoped active layer the stimulated emission is observed at band-to-band ...
openaire   +2 more sources

Optical gain and stimulated emission in nanocrystal quantum dots.

Science, 2000
The development of optical gain in chemically synthesized semiconductor nanoparticles (nanocrystal quantum dots) has been intensely studied as the first step toward nanocrystal quantum dot lasers. We examined the competing dynamical processes involved in
V. Klimov   +7 more
semanticscholar   +1 more source

The influence of gain compression on picosecond optical pulses in semiconductor optical amplifiers

Journal of Modern Optics, 1998
Abstract The influence of gain compression on characteristics of picosecond optical pulses amplified in semiconductor optical amplifiers is investigated theoretically. The results are shown to be in agreement with experimental measurements in both the temporal and the spectral domain.
Jianming Tang   +2 more
openaire   +2 more sources

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