Patent ID: 8520300
Filing Date: 2013-08-27
Classification: H04B

Abstract:
1. An optical amplifier comprising: a light amplifying medium for receiving an input optical signal and outputting an output amplified signal; a first measuring block for measuring a change in power of the input signal; a pump laser for supplying pump light to the light amplifying medium; and an electronic control for controlling the power of the pump light in response to determining that the measured change in power of the input signal is greater than a specified input transient threshold to provide an output amplified signal having a substantially constant power following a transient period for one or more changes in the power of the input signal, wherein controlling the power of the pump light supplied by the pump laser includes decreasing the power of the pump light by an amount based on a set of precomputed incremental steps relating particular values for decreasing the power of the pump light with corresponding changes in input power.