Patent ID: 11942695
Assignee: PHASE SENSITIVE INNOVATIONS, INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. An apparatus for controlling phase in a plurality of optical signal channels, the apparatus comprising:
an optical source configured to output an optical source signal;
a splitter that receives the optical source signal, and splits the optical source signal into synchronized signals having the same phase and frequency, the synchronized signals including a reference signal and a carrier signal;
a plurality of phase modulators, each connected to receive the carrier signal, and based on the carrier signal to transmit an output signal-signal, thereby resulting in a plurality of respective phase modulator output signals as optical input signals;
a synchronization controller configured to generate and output a periodic voltage function and a voltage function start indicator signal;
a plurality of digital processors, connected to simultaneously receive the voltage function start indicator signal output by the synchronization controller, each digital processor configured to output a respective adjustment signal to each respective phase modulator of a respective group of phase modulators, wherein the respective adjustment signals are based on a respective group of interference signals, each interference signal of the group of interference signals generated based on the periodic voltage function and a respective phase modulator output signal, and each respective adjustment signal causing a respective phase modulator to control the phase of its respective phase modulator output signal.