| 摘要 |
PROBLEM TO BE SOLVED: To reduce a frequency of occurrence of collision of registration request signals which a station side optical line termination device receives from a plurality of subscriber side optical line termination devices on the condition that operation of the subscriber side optical line termination devices are made in accordance with a standard specification.SOLUTION: An optical communication system comprises a station side optical line termination device and a subscriber side optical line termination device connected with the station side optical line termination device via an optical communication path. The station side optical line termination device comprises a signal transmission control unit that transmits a registration request transmission control signal while increasing optical signal output power by one step at a time by optical signal output power with different magnitude of predetermined first to Nth stages per registration communication sequence by transmission of the registration request transmission control signal from the station side optical line termination device and reception of a registration request signal transmitted by an unregistered subscriber side optical line termination device in response to reception of the registration request transmission control signal. |
