Patent ID: 9729230
Date: 2017-08-08
CPC Classifications: G02F,H04B

Claim:
1. A computer implemented method for centralized automatic bias control for a plurality of modulators, comprising: coupling, using a coupler, output of each of the plurality of modulators to generate a combined modulator output; inserting, using a pilot insertion device, a pilot tone into each of the plurality of modulators: wherein a different pilot tone frequency is inserted for each of the plurality of modulators; monitoring, using a monitoring device, power (P dividing, by time-division multiplexing, a period of time into a plurality of time slots corresponding to a total number of modulators, and differentiating each of the plurality of modulators by synchronization with bias dithering signals; adjusting, using an adjuster device, the current modulator bias determined to be sub-optimal for each of the plurality of modulators; and iterating the monitoring and adjusting until the threshold condition has been met.