Optical structure for the compensation of chromatic dispersion

Details Optical structure for the compensation of chromatic dispersion Optical structure for the compensation of chromatic dispersion

G - Physics

02

B

G02B 6/293 (2006.01) G02B 6/34 (2006.01)

Patent

CA 2454687

An optical structure and devices based thereon for the compensation of chromatic dispersion in a multi-channel light signal are provided. The optical structure includes a waveguide and a Bragg grating provided therein. The Bragg grating has a plurality of grating components, each associated with one or a few of the channels to be compensated. The period of each grating component is selected to allow compensation of chromatic dispersion experienced by this particular channel or these particular channels, thereby taking into account the wavelength-dependent dispersion slope of the light signal. Tuning means may also be provided in order to adjust the dispersion of the grating components to the required values.

La présente invention concerne une structure optique et des dispositifs basés sur ladite structure permettant de compenser la dispersion chromatique dans un signal lumineux multiplex. Ladite structure optique comprend un guide d'ondes et un réseau de Bragg. Le réseau de Bragg présente une pluralité de composants de réseau, chacun étant associé à au moins un ou plusieurs des canaux à compenser. La période de chaque composant de réseau est sélectionnée pour permettre la compensation de la dispersion chromatique subie par ce canal particulier ou par ces canaux particuliers, prenant ainsi en compte la pente de dispersion dépendant de la longueur d'onde du signal lumineux. Des moyens de syntonisation peuvent également être utilisés de manière à régler la dispersion des composants de réseau aux valeurs souhaitées.

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