Spatial filter for high power laser beam

Details Spatial filter for high power laser beam Spatial filter for high power laser beam

G - Physics

02

B

G02B 5/20 (2006.01) G02B 6/136 (2006.01) G02B 27/46 (2006.01)

Patent

CA 2237653

The invention comprises a spatial filter and a method of spatially filtering a laser beam, particularly a high power laser beam. The inventive spatial filter and method of use is especially suited for use in an optical system for writing index gratings in optical waveguides. The invention provides a method of writing gratings in optical waveguide fiber that results in improved grating performance.

La présente invention vise un filtre spatial et une méthode de filtrage spatial d'un faisceau laser, plus précisément un faisceau laser haute puissance. Ce filtre spatial et son mode d'emploi innovateur conviennent tout particulièrement à un système optique servant à enregistrer des réseaux indiciels sur des guides d'ondes optiques. L'invention porte sur une méthode d'enregistrement de réseaux de diffraction sur des fibres de guides d'ondes qui permet d'obtenir des réseaux ayant un meilleur rendement.

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