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Optical Engineering

Effect of absorption loss on the saturation characteristics of semiconductor optical amplifier
Author(s): Ning Guo; Songniang Fu; Ping Shum; Chongquing Wu; Desmond R. Lim
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Paper Abstract

Semiconductor optical amplifiers (SOAs) as nonlinear devices always work in the gain saturation region. Therefore, the saturation gain is an important parameter of SOAs. However, the existing theoretical gain formula greatly deviates from the experimental measurements. We find experimentally that the effect of the absorption loss on the SOA gain cannot be neglected, especially when the SOA is biased into the saturation region. In this paper, considering the influence of the absorption loss, we propose a modification to the SOA gain formula in common use. We are able to validate the revised formula against the experimental measurements. Thus the theoretical formula after modification can be accurately applied to evaluate the SOA gain in practice.

Paper Details

Date Published: 1 March 2008
PDF: 5 pages
Opt. Eng. 47(3) 035004 doi: 10.1117/1.2896294
Published in: Optical Engineering Volume 47, Issue 3
Show Author Affiliations
Ning Guo, Nanyang Technological Univ. (Singapore)
Songniang Fu, Nanyang Technological Univ. (Singapore)
Ping Shum, Nanyang Technological Univ. (Singapore)
Chongquing Wu, Beijing Jiaotong Univ. (China)
Desmond R. Lim, DSO National Labs. (Singapore)

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