Patent ID: 6738187
Filing Date: 2004-05-18
Classification: H01S

Abstract:
A system for improving gain efficiency of a semiconductor optical amplifier device receiving an input optical signal to be amplified, and an input bias signal, and amplifying said input signal to generate an amplified output optical signal having a peaked spectrum function including a center wavelength according to said input bias signal, said system comprising:an optical filter element located at the output of said semiconductor optical amplifier device for receiving and transmitting said amplified output optical signal, said optical filter element exhibiting a peaked passband function including a center wavelength; and, a wavelength-locked loop servo-control circuit for controlling said input bias signal in a manner to enable real time mutual alignment of said amplified output optical signal center wavelength with said optical filter having said peaked passband function so that said output optical signal is maximally transferred through said optical filter element, thereby resulting in increased semiconductor optical amplifier gain characteristic.