Fault detection in optical fibers

Details Fault detection in optical fibers Fault detection in optical fibers

H - Electricity

04

B

H04B 10/08 (2006.01) H04Q 9/00 (2006.01)

Patent

CA 2567233

A system and method for remotely detecting and reporting faults in optical fibers is provided. Using a device similar to an Optical Time Domain Reflectometer (OTDR), breaks or sharp bends in an optical fiber can be detected, and the location of such events precisely determined, based on the time required for an optical pulse to travel from the device to the bend or break, and back to the device again. The location of reflections caused by breaks or poor connections may be identified, as well as the locations of attenuating events due to bends or other losses in the fiber. Unlike a conventional OTDR, the location of the event can be transmitted to a technician or central office via a radio link, allowing real- time reporting of the operational status of a fiber. Large numbers of fibers may be continuously monitored in real-time by permanently installing such monitoring systems in a network. The location of events may be determined in active communication fibers, or in passive fiber sensors used for monitoring of large-scale structures.

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