| 摘要 |
<p>An optical communication device comprising a connection port (16) provided in an optical signal path in the device and connected with a dispersion compensation fiber (17), an OSC coupler (13a) provided at the preceding stage of the connection port (16) and separating a monitor signal from an optical signal, an O/E section for detecting the monitor signal separated by the OSC coupler (13a), a variable light attenuator (19a) provided at the preceding stage of the connection port (16) and interrupting the optical output to the optical signal path, a WDM coupler (18a) provided at the preceding stage of the OSC coupler (13a) and branching the optical signal, a PD section for detecting the optical signal branched by the WDM coupler (18a), and an OSC unit (100) for judging the connection state of the dispersion compensation fiber (17) to the connection port (16)on the basis of the output of the optical signal detected at the PD section and the monitor signal detected at the O/E section and interrupting the output of the optical signal by a variable light attenuator (19) if the connection state of the dispersion compensation fiber (17) is judged abnormal.</p> |
