Enhanced sensitivity pressure tolerant fiber optic hydrophone

Details Enhanced sensitivity pressure tolerant fiber optic hydrophone Enhanced sensitivity pressure tolerant fiber optic hydrophone

2006-10-19

2008-12-16

Pihulic, Daniel (Department: 3662)

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

C367S172000

Reexamination Certificate

active

07466631

ABSTRACT:
An interferometric hydrophone operable for use in surrounding fluid, includes an outer mandrel having an interior open to the surrounding fluid. A sensing optical fiber is wound on the exterior of the outer mandrel. An inner mandrel is positioned in the interior of the outer mandrel. A chamber defined between the inner mandrel and outer mandrel is in communication with the surrounding fluid. The inner mandrel has a sealed gas filled interior. Compression and expansion of the inner mandrel results in compression and expansion of the outer mandrel.

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