STATION SIDE DEVICE, SUBSCRIBER SIDE DEVICE AND OPTICAL COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To reduce a fluctutation width of an optical output power even when a photodiode for monitoring the optical output power of a station side device is reduced.

SOLUTION: A subscriber side device 200 detects a power level of a downlink optical input signal from a station side device 100, and transmits control information corresponding to its detected value to the station side device. The station side device controls the power level of a downlink optical output signal to the subscriber side device based on the control information.

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