Optical wavelength multiplexer/demultiplexer

Details Optical wavelength multiplexer/demultiplexer Optical wavelength multiplexer/demultiplexer

H - Electricity

04

J

H04J 14/02 (2006.01) G02B 6/30 (2006.01) G02B 6/34 (2006.01)

Patent

CA 2212975

An optical wavelength multiplexer/demultiplexer has an input channel waveguide, an input slab waveguide, an arrayed-waveguide grating having N channel waveguides, an output slab waveguide, and N output channel waveguides. Each output channel waveguide is provided with an outwardly tapered end. Each tapered end has a width at its end surface which becomes larger as the output channel waveguide becomes distant from the symmetrical axis of the output slab waveguide. The loss differences suffered by each separated signal may be substantially reduced.

Multiplexeur/démultiplexeur de longueurs d'onde optiques comprenant un guide d'onde de canal d'entrée, un guide d'onde à plaque d'entrée, un réseau de diffraction comportant N guides d'onde de canal, un guide d'onde à plaque de sortie et N guides d'onde de canal de sortie. Chaque guide d'onde de canal de sortie a une extrémité effilée vers l'extérieur, dont la surface terminale s'élargit en fonction de l'éloignement du guide d'onde de canal de sortie par rapport à l'axe symétrique du guide d'onde à plaque de sortie. Les différences de perte subies par chaque signal distinct peuvent être sensiblement réduites.

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