OPTICAL COMMUNICATION SYSTEM, AND SYNCHRONIZING METHOD FOR OPTICAL COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To detect data by a clock signal from one and the same clock source in a system in which a star coupler connects a plurality of nodes.

SOLUTION: The clock source 3 having an optical transmitter 10 for outputting a clock signal in a prescribed wavelength is connected to the star coupler 4 to which the plurality of nodes 2 are connected. Each node 2 includes a phase comparator 12 for comparing the clock signal with a data signal in phase, a phase adjuster 13 for reception for adjusting the phase of a received data signal and a phase adjuster 14 for transmission for adjusting the phase of a data signal to be transmitted. The phase comparator 12 of each node 2 compares a data signal outputted from an optional node 2 among the plurality of nodes 2 with the clock signal output from the clock source 3 in phase, and the phase adjuster 13 for reception and the phase adjuster 14 for transmission make phases between the data signal and the clock signal coincide with each other.

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