Synchronizing phases of multiple opitcal channels
AssigneeEM Photonics, Inc.
InventorsPetersen F. Curt, Michael R. Bodnar
Life of this patent
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Abstract
A system may include one or more devices that may be used to simultaneously measure and modulate phases of a many-channel optical system relative to a high frequency optical carrier. This device may be constructed using analog-to-digital converters, comparators, and distributed timers. A digital processor may be used to recover phase information from the measurements and to calculate an error compared to desired phase. The processor may then apply feedback to a phase modulator to correct the phase.
Claims30
A phase control apparatus, comprising:
- at least one phase detector configured to detect a respective phase component of at least one optical signal;
- at least one comparison device configured to compare the detected respective phase component with a corresponding phase set-point value to generate an error value;
- and
- at least one phase, correction generation device configured to generate at least one phase correction signal corresponding to the at least one optical signal and based at least in part on the error value, wherein the at least one phase correction signal is used to adjust at least one phase of the at least one optical signal.
A phase control method comprising:
- detecting a respective phase component of at least one optical signal;
- comparing the detected respective phase component with a corresponding phase set-point value to generate an error value;
- generating at least one phase correction signal corresponding to the at least one optical signal and based at least in part on the error value;
- and
- using the at least one phase correction signal to adjust at least one phase of the at least one optical signal.
A storage medium containing executable instructions that, upon execution by a processing device, result in the implementation of operations comprising:
- detecting a respective phase component of at least one input optical signal;
- comparing the detected respective phase component with a corresponding, phase set-point value to generate an error value;
- generating at least one phase correction signal corresponding to the at least one optical signal and based at least in part on the error value;
- and
- using the at least one phase correction signal to adjust at least one phase of the at least one optical signal.
Dependencies are inferred from the claim text.