High sensitivity fiber optic hydrophone

Details High sensitivity fiber optic hydrophone High sensitivity fiber optic hydrophone

1999-05-07

2000-04-11

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367163, 367174, H04R 1700

Patent

active

060495111

ABSTRACT:
A fiber optic hydrophone structure comprises a casing around which is wound an optical fiber. The casing includes complementary top and bottom diaphragm members that mesh together and which are separated by a spacer ring. The spacer ring is tapered to knife edges which abut the inside surfaces of the top and bottom diaphragm members. The spacer thus acts as a fulcrum when a seismic signal causes motion of the diaphragms.

REFERENCES:
patent: 4959539 (1990-09-01), Hofler et al.
patent: 5390155 (1995-02-01), Lea
patent: 5394379 (1995-02-01), Weichart et al.
patent: 5637865 (1997-06-01), Bullat et al.

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