Optical multi-channel separating filter with electrically...

G - Physics – 02 – F

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G02F 1/315 (2006.01) B81B 1/00 (2006.01) G02B 6/122 (2006.01) G02F 1/295 (2006.01) G02F 1/313 (2006.01) G02F 1/35 (2006.01) G02F 1/01 (2006.01) G02F 1/061 (2006.01) G02F 1/29 (2006.01)

Patent

CA 2248372

The invention relates to the construction of optical multipath switches based on electrically switchable photonic crystals. A filled photonic crystal, switchable electrically and/or by light, is used as a tunable mirror. By creating selective optical deformations in the photonic crystal, its properties can be influenced in selected areas in terms of transmission capability. This is done preferably by application of a strong electrical field. Light is coupled in and out via fixed photonic mirrors located at an angle to the photonic crystal. The optical switches of the invention find application in switching networks and serve the purpose of service selection. A very high packing density may be achieved.

L'invention concerne la structure de filtres de séparation optiques à voies multiples, à base de cristaux photoniques électriquement ajustables. Selon l'invention, un cristal photonique rempli, pouvant être réglé par voie électriquement et/ou par la lumière est utilisé en tant que miroir adaptable. Des déformations optiques ciblées dans le cristal photonique permettent d'influer sur les propriétés du cristal photonique dans des zones sélectionnées, au niveau de leur transmissibilité optique. Ceci s'effectue de préférence par application d'un champ électrique de forte intensité. Le couplage et le découplage de la lumière s'effectue au moyen d'un miroir photonique disposé selon un angle fixe par rapport au cristal photonique. Ces filtres de séparation optiques sont utilisés dans des réseaux de commutation et permettent la sélection de services. Ils sont conçus pour obtenir une grande densité de concentration.

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