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Semiconductor optical gain

About: Semiconductor optical gain is a research topic. Over the lifetime, 5997 publications have been published within this topic receiving 96505 citations.


Papers
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Journal ArticleDOI
R.G. Swartz1, Bruce A. Wooley1
TL;DR: Results of the study indicate that to eliminate from the optical output any dependence on either variation in laser device characteristics or the dc average of the input signal, feedback control of both the prebias and modulation current is necessary.
Abstract: In this paper we analyze the design of biasing and control circuits for semiconductor lasers in a generalized context based on an idealized laser characteristic. In particular, we address three major design considerations: whether to bias the laser above or below threshold, how to stabilize the optical output levels independent of variation in the average output power, and to what degree the output levels can be stabilized relative to various circuit and device parameters. Results of our study indicate that to eliminate from the optical output any dependence on either variation in laser device characteristics or the dc average of the input signal, feedback control of both the prebias and modulation current is necessary.

26 citations

Proceedings ArticleDOI
25 Feb 1996
TL;DR: In this paper, a simple polarisation independent (PI) all-optical TDM demultiplexer was proposed that utilizes the ultrafast four-wave mixing (FWM) process of both TE and TM modes in a semiconductor laser amplifier (SLA) in which input pump and signal pulses are deliberately depolarized to suppress polarization coupling.
Abstract: Summary form only given. All-optical time-division demultiplexing (TDM) is one of the most fundamental functions in future Tbit/s all-optical networks. This paper proposes a simple polarisation independent (PI) all-optical TDM demultiplexer that utilizes the ultrafast four-wave mixing (FWM) process of both TE and TM modes in a semiconductor laser amplifier (SLA) in which input pump and signal pulses are deliberately depolarized to suppress polarization coupling.

26 citations

Journal ArticleDOI
TL;DR: In this article, an experimental study of the gain recovery of an InAs-InGaAsP-InP columnar-quantum-dot semiconductor optical amplifier around 1550 nm is presented.
Abstract: We report an experimental study of the gain recovery of an InAs-InGaAsP-InP columnar-quantum-dot semiconductor optical amplifier around 1550 nm. We find a three-step recovery process that gives around 85% gain recovery in only 10 ps and 100% in around 30 ps in case of a quite complete gain saturation. We also give a possible physical explanation for the peculiar gain dynamics.

26 citations

Journal ArticleDOI
TL;DR: The experiment proves that the spectrum characteristics of the UWB pulses satisfy Federal Communications Commission regulations, and the experimental results are consistent with the simulated results based on the laser's rate equations.
Abstract: We propose and demonstrate an approach to the generation of an ultrawideband (UWB) pulse utilizing the nonlinear dynamics of a semiconductor laser (SL). The output UWB chaotic optical pulses generated by the SL with optical feedback can be controlled when the feedback strength and driving current of the SL are tuned. Our experiment proves that the spectrum characteristics of the UWB pulses satisfy Federal Communications Commission regulations, and the experimental results are consistent with the simulated results based on the laser’s rate equations.

26 citations

Journal ArticleDOI
TL;DR: In this article, the use of AlInGaAs multiple quantum well active regions resulted in record-high saturation output power of +0.5 dBm and 16 dB of fibre-to-fibre gain.
Abstract: Vertical cavity semiconductor optical amplifiers operating at 1540 nm are presented. The use of AlInGaAs multiple quantum well active regions resulted in record-high saturation output power of +0.5 dBm and 16 dB of fibre-to-fibre gain. These results were achieved in reflection mode operation using optical pumping by a 980 nm semiconductor laser.

26 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20233
20229
20211
20201
20187
201789