Signal relay apparatus of optical communication system

摘要

The signal relay apparatus has a plurality of photoelectric converters which convert an optical signal input from an electronic equipment (A-C) into an electric signal and outputs the same to the photoelectric converter ( 21 - 24 ), and which converts an electric signal input from another photoelectric converter and outputs the same to the corresponding electronic equipment; a plurality of switch circuits ( 31 - 34 ) which are provided at input and output ends of the electric signal of the photoelectric converter ( 21 - 23 ) and which are opened and closed to bypass the electric signal; and a power source supply section ( 41 - 43 ) which supplies a power source to the electronic equipment connected to the photoelectric converter. In a first J/B ( 11 ) and a second J/B ( 12 ), when any one of the electronic equipments connected to the photoelectric converters is not used the electronic equipment (A-C) is by passed by the switch circuit, and the power source supply section stops the supply of a power source to the electronic equipment (A-C).