Interlocked high power fiber system using otdr

H - Electricity – 04 – B

Patent

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Details

H04B 10/02 (2006.01) G01M 11/00 (2006.01) H04B 10/08 (2006.01) H04B 10/12 (2006.01)

Patent

CA 2268003

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.

L'invention concerne un système de verrouillage de sécurité à fibres comprenant un laser à grande puissance (catégorie IV) asservi à un réflectomètre optique temporel (OTDR). Une multiplicité de signaux de données relatives au multiplexage en longueur d'onde (WDM) est transmise par le système à fibres, qui comporte un terminal et une extension. Un circuit de commande est relié au laser et à l'OTDR. L'OTDR contrôle l'intégrité du système à fibres, notamment celle du terminal et de l'extension. Si l'OTDR détecte un défaut dans la voie de transmission optique, l'OTDR et le circuit de commande bloquent ou ferment automatiquement le laser.

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