Method, apparatus and system for minimally intrusive fiber...

H - Electricity – 04 – B

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H04B 10/08 (2006.01) G02B 6/02 (2006.01) G02B 6/46 (2006.01)

Patent

CA 2536236

A method, apparatus and system for minimally intrusive fiber identification includes imparting a time-varying modulation onto an optical signal propagating in an optical fiber and subsequently detecting the presence of the time-varying modulation in the optical signal transmitting through the fiber to identify the fiber. In a specific embodiment of the invention, a time-varying curvature is imposed on the fiber to be identified and the presence of the resultant time variation in the transmitted power of a propagating optical signal is subsequently detected for identification of the manipulated fiber.

La présente invention concerne un procédé, un appareil et un système permettant l'identification de fibres avec intrusion minimale, ledit procédé consistant à conférer une modulation variable dans le temps à un signal optique se propageant dans une fibre optique puis à détecter ultérieurement la présence de la modulation variable dans le temps dans le signal optique transmis par l'intermédiaire de la fibre de manière à identifier cette fibre. Dans un mode de réalisation spécifique de l'invention, une courbure variable dans le temps est imposée à la fibre à identifier et la variation temporelle résultante de l'énergie transmise d'un signal optique qui s'y propage est détectée ultérieurement aux fins de l'identification de la fibre manipulée.

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