Patent ID: 9225456
Filing Date: 2015-12-29
Classification: H04B,H04J

Abstract:
1. A method for post-transient gain control of an optical amplifier, comprising: receiving an optical signal having a plurality of wavelengths; generating a pump signal for a doped fiber amplification element; multiplexing the optical signal and the pump signal into the doped fiber amplification element; generating a gain offset cancelling signal; generating a gain control signal using the gain offset cancelling signal, a first power signal corresponding to the received optical signal, a gain set point, an offset indicative of an amplified spontaneous emission (ASE) compensation, and a second power signal corresponding to the optical signal output from a variable optical attenuator configured to receive the optical signal from the doped fiber amplification element; and using the gain control signal to regulate the pump signal to reduce gain offset for the plurality of wavelengths in the optical signal output from the optical amplifier.