| 摘要 |
PROBLEM TO BE SOLVED: To have a device efficiently perform an occurrence notice of LOS (loss of signal) even if the device is miniaturized.SOLUTION: An optical transceiver 1 comprises: a ROSA 11 including an optical de-multiplexer 21 for de-multiplexing an optical input signal Oto multiple optical output signals, and a TIA 23 for storing abnormality information indicating an abnormality occurrence state for each of the multiple optical output signals at timing abnormality is detected in the multiple optical output signals; and a CPU 13 connected with the ROSA 11 via an alarm signal line Land a serial communication bus L. The ROSA 11 transmits a LOS signal to the CPU 13 via the alarm signal line Lwhen abnormality is detected in any of the multiple optical output signals, and stores abnormality information corresponding to the occurrence of the abnormality in the TIA 23. The CPU 13 reads out the abnormality information from the TIA 23 via the serial communication bus Lwhen the LOS signal is received from the ROSA 11. |
