Multi-plate comb filter and applications therefor

Details Multi-plate comb filter and applications therefor Multi-plate comb filter and applications therefor

H - Electricity

04

J

H04J 14/02 (2006.01) G02B 5/28 (2006.01) G02B 6/34 (2006.01) G02B 27/00 (2006.01)

Patent

CA 2338567

Methods and apparatuses for filtering optical channels to provide, for example, an interleaver, or a deinterleaver. A multi-plate comb filter (100) is used to separate subsets of channels and for mixing subsets of channels. One embodiment of a multi-plate comb filter according to the invention includes a plurality of glass plates (110, 120, 130); partially reflective layers (150, 160) positioned between successive plates, with the layers (140, 170) arranged on the front and back surface of the filter assembly being at least partially reflective. Interleavers and deinterleavers having one or more multi-plate comb filters can be used to interface components designed for a first channel spacing to components designed for a second channel spacing.

L'invention concerne des procédés et des appareils servant à filtrer des canaux optiques de manière à obtenir, par exemple, un intercaleur ou désintercaleur. Des sous-ensembles de canaux sont séparés et mélangés au moyen d'un filtre-peigne multilplaque (100). Dans un mode de réalisation, un filtre-peigne selon l'invention comporte une pluralité de plaques de verre (110, 120, 130) ; des couches partiellement réfléchissantes (150, 160) disposées entre des plaques successives, les couches (140, 170) disposées sur les surfaces avant et arrière de l'ensemble filtre étant au moins partiellement réfléchissantes. Au moyen d'intercaleurs et de désintercaleurs ayant un ou plusieurs filtres-peigne, on peut interfacer des composants destinés à un premier espacement de canal avec des composants destinés à un second espacement de canal.

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