Fiber optic hydrophone having rigid mandrel

Details Fiber optic hydrophone having rigid mandrel Fiber optic hydrophone having rigid mandrel

H - Electricity

04

R

H04R 1/44 (2006.01) G01V 1/18 (2006.01) G02B 6/36 (2006.01) H04B 10/12 (2006.01) H04B 13/00 (2006.01)

Patent

CA 2199087

A fiber optic interferometric sensor for use in a hydrophone system at high pressures includes a reference fiber wrapped around a rigid inner cylinder. A solid layer of compliant material is applied over the reference fiber. The sensing arm of the interferometer is wound over the layer of material applied over the reference fiber. The outer material is sufficiently compliant to provide acoustic sensitivity comparable to that of air-backed hydrophones.

Capteur interférométrique à fibre optique, pour utilisation dans un réseau d'hydrophones à haute pression, comportant une fibre de référence enroulée autour d'un cylindre interne rigide. Une couche pleine de matériau souple est appliquée sur la fibre de référence. Le palpeur de l'interféromètre est embobiné autour de la couche de matériau sur la fibre de référence. Le matériau externe est assez souple pour offrir une sensibilité acoustique comparable à celle des hydrophones à air.

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