G - Physics – 02 – F
Patent
G - Physics
02
F
G02F 1/01 (2006.01) G02B 26/00 (2006.01) G02F 1/225 (2006.01)
Patent
CA 2500316
The invention relates to a device for tuning a Bragg grating by means of compression using a piezoelectric actuator. The inventive device, which is intended, in particular, for optical telecommunications, comprises, for example: means (8) of compressing a segment (4) of optical fibre containing a Bragg grating (2); means (10) of preventing said segment from buckling; a tube (14), through which the aforementioned segment passes; and means (32, 34) of guiding the segment inside the tube. The compression means comprise a dished deformable element (8) and a piezoelectric actuator (20, 22) which is disposed between the deformable element and the tube. According to the invention, the piezoelectric actuator lengthens when excited and, in this way, causes the deformable element to bend, said element in turn compressing the segment.
Dipositif d'accord d'un réseau de Bragg, par compression au moyen d'un actionneur piézoélectrique. Ce dispositif s'applique notamment aux télécommunications optiques et comprend par exemple des moyens (8) de compression d'une portion (4) de fibre optique, contenant un réseau de Bragg (2), et des moyens (10) pour empêcher le flambage de cette portion, un tube (14) traversé par la portion et des moyens (32, 10 34) de guidage de cette portion dans le tube. Les moyens de compression comprennent un élément déformable incurvé (8) et un actionneur piézoélectrique (20, 22) qui est disposé entre l'élément et le tube, s'allonge lorsqu'il est excité et déforme alors l'élément, ce dernier comprimant alors la portion.
Commissariat A. L'energie Atomique
Goudreau Gage Dubuc
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