Temperature compensating bragg grating optical device

Details Temperature compensating bragg grating optical device Temperature compensating bragg grating optical device

G - Physics

02

B

G02B 27/44 (2006.01) A61B 5/00 (2006.01) G01D 5/353 (2006.01) G01L 1/24 (2006.01) G01L 11/02 (2006.01)

Patent

CA 2600888

An apparatus comprising a light guide (110) incorporating a Bragg grating. The apparatus also comprises a moveable wall portion which is coupled to the Bragg grating (108) so that a movement of the wall portion causes a force that effects a change in strain of the Bragg grating and thereby effects a change in an optical period of the Bragg grating. A temperature related change in the optical period of the Bragg grating is reduced by a temperature related change in the force on the Bragg grating by the moveable wall portion.

L'invention concerne un appareil comprenant un guide d'ondes (110) incorporant un réseau de Bragg. L'appareil comprend également une partie de paroi mobile qui est reliée au réseau de Bragg (108) de telle sorte qu'un mouvement de la partie de paroi provoque une force qui effectue un changement de contrainte du réseau de Bragg et qui effectue de ce fait un changement de période optique du réseau de Bragg. Un changement lié à la température dans la période optique du réseau de Bragg est réduit par un changement lié à la température de la force sur le réseau de Bragg grâce à la partie de paroi mobile.

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