Synchronization of an optical pulse stream with an...

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H - Electricity

04

B

H04B 10/18 (2006.01) H04B 10/04 (2006.01) H04B 10/155 (2006.01) H04J 11/00 (2006.01) H04J 14/08 (2006.01) H04L 7/00 (2006.01)

Patent

CA 2372318

In accordance with the present invention, the degree of timing misalignment between the data and clock paths in a RZ (return-to-zero) transmitter can be determined by converting a fraction of the optical output into the electrical domain with an ultra fast non-linear device, thereby squaring the optical peak power to provide a signal for controlling a phase change in the carrier. Using the same invention, the degree of timing misalignment between incoming optical pulses and an electronic signal fed to a modulator for demultiplexing can also be monitored and controlled in an optical time-division demultiplexing (OTDD) receiver.

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