Results 331 to 340 of about 308,424 (390)
Some of the next articles are maybe not open access.
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 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
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
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, 2006An 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
, 2012Semiconductor 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, 2002Experimental 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, 2007A 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), 2004We 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, 1984It 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, 2000The 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, 1998Abstract 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