Wavelength division multiplexing/demultiplexing devices...

G - Physics – 02 – B

Patent

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G02B 6/293 (2006.01) G02B 6/34 (2006.01)

Patent

CA 2405823

Improved wavelength division multiplexing/demultiplexing devices are disclosed. In the case of an improved wavelength division multiplexing device having a diffraction grating for combining a plurality of monochromatic optical beams into a multiplexed, polychromatic optical beam, the improvement comprises employing a plurality of patterned optical input components corresponding to the plurality of monochromatic optical beams, wherein each of the plurality of patterned optical input components introduces a first patterned phase delay into a corresponding one of the plurality of monochromatic optical beams. The improvement also comprises employing a patterned optical output component for introducing a second patterned phase delay into the multiplexed, polychromatic optical beam, wherein the first patterned phase delay and the second patterned phase delay are added so as to reshape the passband of the improved wavelength division multiplexing device.

L'invention concerne des dispositifs améliorés de multiplexage/demultiplexage en longueur d'onde. Dans le cas d'un dispositif amélioré de multiplexage en longueur d'onde comportant un réseau de diffraction ou combinant une pluralité de faisceaux optiques monochromatiques en un faisceau optique polychromatique multiplexé, l'amélioration porte sur l'utilisation d'une pluralité de composants optiques modelés d'entrée correspondant à la pluralité de faisceaux optiques monochromatiques, chacun des composants optiques modelés d'entrée introduisant un premier temps de propagation de phase modelé dans un faisceau optique monochromatique correspondant. L'amélioration porte également sur l'utilisation d'un composant optique modelé de sortie afin d'introduire une second temps de propagation de phase modelé dans le faisceau optique polychromatique multiplexé, le premier et le second temps de propagation de phase modelés étant ajoutés de façon à reprofiler la bande passante du dispositif amélioré de multiplexage en longueur d'onde.

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