Optical time domain reflectometry

H - Electricity – 04 – B

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H04B 10/16 (2006.01) G01M 11/00 (2006.01) H04B 10/08 (2006.01)

Patent

CA 2182384

A waveguide (3) carrying system signals at a first wavelength (.lambda. system) and OTDR signals at a second wavelength (.lambda. OTDR) is provided with optical amplifier means (5, 6) constituted by an optical amplifier (5) and an isolator (6). The isolator (6) has a high isolation factor at the first wavelength (.lambda. system) and a low isolation factor at the second wavelength (.lambda. OTDR).

Un guide d'onde (3) acheminant des signaux d'un système à une première longueur d'onde (.lambda.¿système?) et des signaux RTO (à réflectométrie temporelle optique) à une seconde longueur d'onde (.lambda.¿RTO?) est pourvu d'un dispositif d'amplification optique (5, 6) constitué d'un amplificateur optique (5) et d'un isolateur (6). L'isolateur (6) possède un puissant facteur d'isolation au niveau de la première longueur d'onde (.lambda.¿système?) et un faible facteur d'isolation au niveau de la seconde longueur d'onde (.lambda.¿RTO?).

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