Transmission apparatus, transmission system, and failure detection method

摘要

A transmission apparatus includes a plurality of output units and a detector. The plurality of output units is configured to couple to a plurality of transmission paths, respectively, branched from one transmission path. The plurality of output units includes at least one first output unit configured to transmit signal light selectively to one of the branched transmission paths, and at least one second output unit configured to transmit test light with a wavelength different from a wavelength of the signal light to another of the branched transmission paths. The detector is configured to decide a failure in the branched transmission paths, based on a result of detection of a reflected light of the test light received through at least one of the branched transmission paths.

主权项

1. A transmission apparatus comprising:
a first transceiver configured to couple to at least one of a plurality of transmission paths; a second transceiver configured to couple to another one of the plurality of transmission paths; the first transceiver being configured as a work system to transmit signal light selectively to the at least one of the plurality of transmission paths, and the second transceiver being configured as a standby system to transmit test light with a wavelength different from a wavelength of the signal light to the another one of the plurality of transmission paths; and a detector configured to detect a failure in the first transceiver while detecting a failure in the second transceiver based on a result of detection of a reflected light of the test light received through the at least one of the plurality of transmission paths and the another one of the plurality of transmission paths, such that if a failure is detected in the first transceiver while no failure is detected in the second transceiver, the second transceiver becomes the work system to transmit the signal light.