| 摘要 |
The in-fiber safety interlock system includes a high power (Class IV) laser (24) interlocked to an OTDR (26). A plurality of WDM data signals are transmitted over the fiber system (12), including a terminal portion (14) and an extended portion (16). A control circuit (30) is connected to the laser (24) and OTDR (26). The OTDR (26) monitors the integrity of the fiber system (12), including both the terminal portion and the extended portion. If the OTDR (26) detects a fault in the optical transmission path, the OTDR (26) and the control circuit (30) operate to automatically disable or shut down the laser.
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