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Optical 2R remodulator using feedforward control of semiconductor optical amplifier gain

✍ Scribed by Evandro Conforti; Aldário C. Bordonalli; Steven Ho; Sung-Mo (Steve) Kang

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
126 KB
Volume
21
Category
Article
ISSN
0895-2477

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✦ Synopsis

A technique for optical pulse regeneration and reshaping using feedforward current injection in a semiconductor optical amplifier is reported. By matching the shape and phase of the injected current and the incoming optical pulse, the optical amplifier gain is set to increase with the amplifier input optical signal le¨el, resulting in an enhanced extinction ratio for the output pulse. It has been experimentally demonstrated that a proper forward gain control impro¨es the output extinction ratio by more than 5 dB for a system where the optical amplifier gain dynamics limits the maximum pulse rate to 500 Mbitsrs.

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