Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/27771
Title: Gain control of semiconductor optical amplifier using a bandpass filter in a feedback loop
Authors: Qureshi, KK
Tam, HY 
Lu, C 
Wai, PKA 
Keywords: Optical gain control
Relaxation oscillations
Semiconductor optical amplifier (SOA)
Issue Date: 2007
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE photonics technology letters, 2007, v. 19, no. 18, p. 1401-1403 How to cite?
Journal: IEEE photonics technology letters 
Abstract: The authors present a simple configuration of a gainclamped semiconductor optical amplifier (GC-SOA) based on automatic intensity control of a feedback light generated by amplified spontaneous emission, using a narrowbandwidth thin-film-tunable filter. Experimental results show that the proposed amplifier has good gain clamping characteristics and the feedback light dramatically reduces steady and transient gain variations. The feedback light operates satisfactorily with the channel's add-drop frequency up to 20.9 kHz.We also examined the performance of the GC-SOA by employing the feedback light at different wavelengths.
URI: http://hdl.handle.net/10397/27771
ISSN: 1041-1135
EISSN: 1941-0174
DOI: 10.1109/LPT.2007.903501
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