France Telecom

Catherine Ramus

Adrien Bruno

Arnaud Rigny

A spectrographic type multiplexer and/or demultiplexer optical component having an array of waveguides, the component comprising a star inlet coupler and a star outlet coupler with said array extending therebetween, and also comprising an inlet light guide and an outlet light guide for said inlet and outlet couplers, respectively, wherein the spectrum response of the component is the sum of two substantially Gaussian spectrum responses of peaks that are offset in wavelength.

Spectrographic multiplexer component having an array of waveguides

The invention relates to a multi-wavelength filter having a bundle of optical waveguides formed on a common substrate and organized in such a manner that the wavelength response of the filter depends on the phase shifting to which light is subjected in the optical waveguides of the bundle. The filter is of the type in which polarization insensitivity is obtained by varying the birefringence of the optical waveguides. The optical waveguides of said bundle have the same birefringence in two end zones while in an intermediate zone they have birefringence that is different from that of said end zones. In the bundle of waveguides, the transitions between intermediate zone and the end zones extend along respective planes that are inclined relative to the direction of light propagation along the waveguides. The portions of the waveguides situated respectively in the intermediate zone and in an end zone are interconnected by means of respective mode matchers that are hourglass-shaped.

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Vitry, France

Catherine Ramus