Multiple segment fiber optic hydrophone

Details Multiple segment fiber optic hydrophone Multiple segment fiber optic hydrophone

1992-11-09

1994-05-31

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

25022719, H04R 2300

Patent

active

053175441

ABSTRACT:
A hydrophone includes a plurality of hydrophone components separated by finite spacings and interconnected to provide a single output signal. Each hydrophone component is based upon a single-mandrel design in which a cylindrical body is apportioned into sensing and reference sections. The sensing sections comprise coaxial arrangements of pliant inner and outer cylinders separated by an annular airspace while the adjacent reference sections comprise solid-walled cylinders. Finite separation distances between the hydrophone components result in reduced flow noise occasioned by increased sensing area while detection sensitivity is maintained.

REFERENCES:
patent: 4193130 (1980-03-01), Young et al.
patent: 5140154 (1992-08-01), Yurck et al.
patent: 5155548 (1992-11-01), Danver et al.
patent: 5212670 (1993-05-01), Brown

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