Improved photonic crystal structure sensor

G - Physics – 02 – B

Patent

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Details

G02B 6/10 (2006.01) G01H 9/00 (2006.01) G02B 6/13 (2006.01)

Patent

CA 2624790

An acoustic sensor and a method of fabricating an acoustic sensor are provided. The acoustic sensor includes at least one photonic crystal structure and an optical fiber having an end optically coupled to the at least one photonic crystal structure. The acoustic sensor further includes a structural portion mechanically coupled to the at least one photonic crystal structure and to the optical fiber. The at least one photonic crystal structure, the optical fiber, and the structural portion substantially bound a region having a volume such that a frequency response of the acoustic sensor is generally flat in a range of acoustic frequencies.

L'invention concerne un capteur acoustique et un procédé de fabrication d'un capteur acoustique. Le capteur acoustique comprend au moins une structure cristalline photonique et une fibre optique ayant une extrémité optiquement couplée à la au moins une structure cristalline photonique. Le capteur acoustique comprend en outre une partie structurelle mécaniquement couplée à la au moins une structure cristalline photonique et à la fibre optique. La au moins une structure cristalline photonique, la fibre optique et la partie structurelle lient sensiblement une région ayant un volume de sorte qu'une réponse de fréquence du capteur acoustique est également plate dans une plage de fréquences acoustiques.

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