OPTICAL TRANSMISSION SYSTEM, OPTICAL MULTIPLEXING SYSTEM, AND RELATED PERIPHERAL TECHNIQUE

摘要

PROBLEM TO BE SOLVED: To stabilize a phase of a control signal of an optical switch for demultiplexing an optical multiplex signal.

SOLUTION: A phase of the control signal supplied from a timing regenerator 432 to the optical switch 434 is controlled on the basis of a low frequency signal f1superimposed on an optical signal subjected to demultiplexing by the optical switch 434.

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