Reconfigurable optical add-drop module, system and method

H - Electricity – 04 – J

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H04J 14/02 (2006.01) G02B 6/34 (2006.01) G02B 6/35 (2006.01)

Patent

CA 2486725

An apparatus, system, and method for all-optical wavelength add-drop switching are provided. A number of optical ports, including at least one input port and at least one output port, are each optically coupled to a respective dispersive element. When a multichannel optical signal is input through an input port, an optical beam of each channel emerges from the dispersive element at an angle depending upon its wavelength. The beams emerging from the dispersive element pass through a bulk optical element which redirects each beam toward a respective one of a number of routing or switching elements, each of which has been set to redirect the respective beam through the bulk optical element towards a selected dispersive element coupled to a selected output port.

L'invention concerne un dispositif, un système et un procédé de commutation entièrement optique à insertion-extraction de longueurs d'ondes. Un certain nombre de point d'accès optiques comprenant au moins un point d'entrée et au moins un point de sortie, sont couplées optiquement à un élément dispersif respectif. Lorsqu'un signal optique multiplex est introduit dans un point d'entrée, le faisceau optique de chaque voie émerge de l'élément dispersif avec un angle dépendant de sa longueur d'onde. Les faisceaux émergeant de l'élément dispersif passent à travers un élément optique en substrat lequel redirige chaque faisceau vers un élément de routage ou de commutation respectif compris dans une pluralité de tels éléments dont chacun a été défini de manière à rediriger le faisceau respectif à travers l'élément optique en substrat, en direction d'un élément dispersif sélectionné, couplé à un point de sortie sélectionné.

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