Optical signal transmission system, particularly optical...

H - Electricity – 04 – B

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H04B 10/04 (2006.01) H04B 10/08 (2006.01) H04N 7/22 (2006.01)

Patent

CA 2063666

Fiber-optic network providers wish to monitor the sig- nal quality at certain points in the network (e.g., at network termination points). The invention provides a system wherein - the monitoring of the useful signal (S1) is effected indirectly, i.e., by monitoring an auxiliary signal (S2); - the means (4, 5, 6, 7) necessary therefor can also be used to set up a service channel between net- work center (1) and monitoring point (4), and - the means necessary therefor can be supplemented at low cost to combine the signal monitoring with (advantageous) signal amplification.

Les fournisseurs d'un réseau à fibres optiques désirent contrôler la qualité des signaux en certains points du réseau (par exemple, aux points d'arrivée du réseau). Le système offert par la présente invention permet de contrôler le signal utile (S1) indirectement, c'est-à-dire en contrôlant un signal auxiliaire (S2); les moyens (4, 5, 6, 7) nécessaires à cette fin peuvent également servir à établir un canal de service entre un centre réseau (1) et un point de contrôle (4), et peuvent être complétés à faible coût afin de combiner le contrôle du signal à l'amplification (avantageuse) du signal.

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