Title :
Waveform restoration in semiconductor optical amplifier using fiber loop mirror
Author :
Chan, Kit ; Chan, Chun-Kit ; Hung, Wai ; Tong, Frank ; Chen, Lian Kuan
Author_Institution :
Dept. of Inf. Eng., Chinese Univ. of Hong Kong, China
fDate :
7/1/2002 12:00:00 AM
Abstract :
In this letter, we present a simple and effective interferometric approach for waveform restoration in a semiconductor optical amplifier (SOA) using a fiber loop mirror. Pattern-dependent distortion caused by gain dynamics of the SOA can be compensated. With our scheme, an enhanced input power dynamic range of 7 dB was achieved. For data sequences with different pattern lengths, both significant waveform and extinction ratio improvement were obtained.
Keywords :
electro-optical modulation; laser mirrors; light interferometry; optical fibres; optical saturation; semiconductor optical amplifiers; LiNbO/sub 3/ modulator; SOA; data sequence pattern lengths; enhanced input power dynamic range; extinction ratio improvement; fiber loop mirror; gain dynamics; gain saturation; inline amplifier; interferometric approach; pattern-dependent distortion compensation; semiconductor optical amplifier; waveform restoration; Dynamic range; Mirrors; Optical attenuators; Optical distortion; Optical fibers; Optical filters; Optical interferometry; Optical saturation; Semiconductor optical amplifiers; Stimulated emission;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2002.1012410
