Integrated optical multiplexer and demultiplexer

G - Physics – 02 – B

Patent

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Details

G02B 6/43 (2006.01) G02B 6/12 (2006.01) G02B 6/124 (2006.01) G02B 6/293 (2006.01) G02B 6/34 (2006.01) H04J 14/02 (2006.01)

Patent

CA 2430098

An integrated optical multiplexer and/or demultiplexer includes an integrated circuit substrate (12) formed with an array of photo detectors (13, 14, 16 and 17) (for the demultiplexer) or photo emitters (for the multiplexer). Conditioning electronics (18) is formed on the substrate and is coupled to the photo elements for conditioning electronic data for optical transmission in the case of the multiplexer or for conditioning optical signals into electronic data in the case of the demultiplexer. A first layer (22) of optically transparent material is formed on the substrate overlying the detectors and/or emitters and a second layer (23) of optically transparent material is formed on the first layer and functions as an optical waveguide. A binary blazed grating (23) is formed at the interface of the first and second layers of optically transparent material.

L'invention concerne un multiplexeur et/ou un démultiplexeur optiques intégrés comprenant un substrat de circuit intégré (12) formé d'un réseau de photodétecteurs (13, 14, 16, 17) (pour le démultiplexeur) ou de photoémetteurs (pour le multiplexeur). Un circuit de conditionnement (18) est formé sur le substrat et couplé aux photoéléments afin de conditionner des données électroniques aux fins d'émission optique, dans le cas d'un multiplexeur, ou afin de conditionner des signaux optiques en données électroniques, dans le cas d'un démultiplexeur. Une première couche (22) de matériau optique transparent est formée sur le substrat en recouvrement des détecteurs et/ou des émetteurs, et une seconde couche (23) de matériau optique transparent est formée sur la première couche et fonctionne comme guide d'onde optique. A l'interface des première et seconde couches de matériau optique transparent, est formé un réseau blazé binaire (23).

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