Diffraction grating coupler, system and method

Details Diffraction grating coupler, system and method Diffraction grating coupler, system and method

G - Physics

02

B

G02B 6/124 (2006.01) G01N 21/41 (2006.01) G02B 6/34 (2006.01)

Patent

CA 2760272

Diffraction grating coupler (100, 200, 300, 400) which comprises an optical waveguide (101, 201, 301, 401) having a first surface (102, 202, 302, 402) and a second surface (103, 203, 303, 403) opposing to said first surface (102, 202, 302, 402), said optical waveguide (101, 201, 301, 401) having a grating (110, 210, 310, 410) on one of said surfaces. It further comprises an elastic polymer film (120, 220, 320, 420) deposited on and attached to said optical waveguide (101, 201, 301, 401), said elastic polymer film (120, 220, 320, 420) partially surrounding said optical waveguide (101, 201, 301, 401) and leaving one of said two surfaces of said optical waveguide (101, 201, 301, 401) open, the diffraction grating coupler (100, 200, 300, 400) thus being mountable on a specimen (230, 330, 430) by attaching said elastic polymer film (120, 220, 320, 420) to said specimen (230, 330, 430).

La présente invention concerne un coupleur de réseau de diffraction (100, 200, 300, 400) comprenant un guide d'onde optique (101, 201, 301, 401) qui présente une première surface (102, 202, 302, 402) et une seconde surface (103, 203, 303, 403) opposée à la première surface (102, 202, 302, 402), lequel guide d'onde optique (101, 201, 301, 401) comporte un réseau de diffraction (110, 210, 310, 410) dans une de ses surfaces. Le coupleur comprend également un film de polymère souple (120, 220, 320, 420) qui est déposé sur le guide d'onde optique (101, 201, 301, 401) et fixé à celui-ci. Le film de polymère souple (120, 220, 320, 420) entoure partiellement le guide d'onde optique (101, 201, 301, 401) et laisse dégagée une des deux surfaces du guide d'onde optique (101, 201, 301, 401), ce qui permet de pouvoir monter le coupleur de réseau de diffraction (100, 200, 300, 400) sur un échantillon (230, 330, 430) et de pouvoir l'y fixer de façon temporaire grâce à la fixation du film de polymère souple (120, 220, 320, 420) sur l'échantillon (230, 330, 430).

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