An optical waveguide modulator

Details An optical waveguide modulator An optical waveguide modulator

G - Physics

02

F

G02F 1/035 (2006.01)

Patent

CA 2305279

An optical waveguide modulator 40 according to the present invention has a substrate 1 made of a material with an electrooptic effect, an optical waveguide 2 to guide a lightwave 2, a travelling wave-type signal electrode 3 and the ground electrodes 4 to control the lightwave. Moreover, it has a buffer layer 6, at least a part thereof being embedded in the superficial layer of the substrate 1, having a larger width "W" than a width ".omega." of the travelling wave-type signal electrode 3 only under the signal electrode 3 and its nearby part.

L'invention concerne un modulateur de lumière du type guide d'ondes (40) qui comporte une substrat électro-optique (1), un guide d'ondes optique (2) servant à guider des ondes de lumière, une électrode de signal (3) du type à onde progressive servant à régler la lumière guidée et une électrode de terre (4). On forme une couche tampon (6), dont la largeur W est supérieure à la largeur w de l'électrode de signal (3) du type à onde progressive, uniquement sous cette dernière. On enterre au moins partiellement la couche tampon sous la surface du substrat (1).

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