SKEW DETECTION DEVICE FOR OPTICAL COMMUNICATION SYSTEM, AND OPTICAL COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a skew detection device for an optical communication system, capable of detecting the amount of skew in a short time.

SOLUTION: An optical communication system comprises a transmitter that multiplexes and transmits a transmission signal and a receiver that receives the received signal from the transmitter for demultiplexing. The transmitter includes pattern generating means 103 that generates a pattern signal to multiplex and transmit the pattern signal comprised of a periodic pattern in which a predetermined data position in the one periodic pattern changes instead of a transmission signal coded by DQPSK. The receiver includes skew detection means 110 that detects the amount of a skew generated inside at least one of the transmitter and the receiver by detecting a location in which a change occurs in the periodic pattern of the pattern signal received and demultiplexed.

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