Using gain tilt for local compensation of unwanted power...

Details Using gain tilt for local compensation of unwanted power... Using gain tilt for local compensation of unwanted power...

H - Electricity

04

B

H04B 10/18 (2006.01) H04B 10/17 (2006.01)

Patent

CA 2433486

A compensator for optical transmission systems exploits gain tilt inherent in optical amplifiers. The amount of SRS induced spectral power gradient is determined, and the amplifier gain is change to cause a compensating gain gradient in the optical amplifier to compensate for the SRS induced spectral power gradient. Fewer components are needed, and so it can be less expensive. It can be implemented as a simple software upgrade to existing systems. Many such compensators can be distributed through the system, without requiring a large inventory of individually specified filters. More accurate compensation can be achieved by making it dependent on the distribution of wavelengths within a band.

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