Alarm System for a Single Mode Optical Fiber Network
作者： Joseph Giovannini , David E. Vokey , Cary R. Murphy , Mark K. Bridges , David Thompson
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摘要: A method is provided for detecting intrusion into an optical cable of a single mode fiber network comprising where monitoring light signals are transmitted along telecommunications to be monitored either additional data or by multiplexing onto common fiber. The received after transmission the analyzed changes indicative movement event. at receive end feeding from multi-mode in manner which causes modal power distribution can detected taking portion only modes.
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