Optical add/drop multiplexer

Details Optical add/drop multiplexer Optical add/drop multiplexer

H - Electricity

04

J

H04J 14/02 (2006.01) G02B 6/34 (2006.01)

Patent

CA 2307209

In accordance with the present invention, a WDM communication signal including a service channel is received by an add/drop multiplexer. An optical filter element included in the multiplexer separates a first optical payload channel and the service channel from the WDM signal and outputs these signals on a first output port. The remaining WDM channels exit the optical filter at a second output. By utilizing this add/drop multiplexer to select both an optical channel and a service channel, the total power loss associated with a communications network is significantly less than that obtained from networks having separate components to add/drop an optical payload channel and a service channel.

Selon la présente invention, un signal de communication MRL comportant un canal de service est reçu par un multiplexeur à insertion/extraction. Un élément de filtre optique contenu dans le multiplexeur sépare un premier canal optique de charge utile et le canal de service du signal MRL, et produit ces signaux de sortie à un premier port de sortie. Les canaux MRL restants produisent le signal de sortie de filtre optique à une deuxième sortie. En utilisant ce multiplexeur à insertion/extraction pour sélectionner un canal optique et un canal de service, on obtient une perte de puissance totale associée à un réseau de communications considérablement moindre que celle obtenue à partir de réseaux comportant des éléments séparés pour insérer/extraire un canal optique de charge utile et un canal de service.

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