Facility for carrying signals via optical conductors...

H - Electricity – 04 – B

Patent

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H04B 10/08 (2006.01) H04B 10/20 (2006.01)

Patent

CA 2198271

The invention concerns a system for monitoring the repeaters (14 to 21) of a facility for carrying signals via optical conductors (10) in which each repeater comprises an optical amplifier for amplifying the signals transmitted by the optical conductors. The remote monitoring signal is emitted from a main centre or monitoring centre (11) to each repeater. The system includes, at the main centre (11), an emitter (51), for example, a light-emitting diode, of remote monitoring signals presenting a broad spectrum of optical wavelengths , preferably at least equal in width to the useful spectrum of wavelengths of the optical signals emitted on the conductors (10). In this manner the useful signal is practically not disturbed by the remote monitoring signal.

L'invention concerne un système de surveillance des répéteurs (14 à 21) d'une installation de transmission de signaux par conducteurs optiques (10) dans laquelle chaque répéteur comporte un amplificateur optique pour amplifier les signaux transmis par les conducteurs optiques. Le signal de télésurveillance est émis à partir d'un centre principal ou de surveillance (11) vers chaque répéteur. Le système comprend, au centre principal (11), un émetteur (51), par exemple une diode électroluminescente, de signaux de télésurveillance présentant un spectre large de longueurs d'ondes optiques, de préférence de largeur au moins égale à la largeur du spectre utile de longueurs d'ondes des signaux optiques émis sur les conducteurs (10). De cette manière le signal utile n'est pratiquement pas perturbé par le signal de télésurveillance.

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