Bias compensated optical grating hydrophone

Details Bias compensated optical grating hydrophone Bias compensated optical grating hydrophone

1981-12-31

1984-05-22

Tudor, Harold J.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367172, H04R 2300

Patent

active

044505418

ABSTRACT:
An optical grating hydrophone employs a dual grating construction and two pairs of optical fibers to provide a reliable output signal without the need for mechanically adjusting the system bias. A bias compensation circuit selects the output signal to be received based upon the output signals from the two optical cable pairs.

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patent: 4297887 (1981-11-01), Bucaro
Tehon, S. et al., "High Dynamic Compliance Hydrophone with Hydrostatic Pressure Balancing", U.S. patent application, Ser. No. 328,335, filed Dec. 7, 1981, assigned to General Electric Co.
Spillman, W. B. et al., "Moving Fiber-Optic Hydrophone", Optics Letters, vol. 5, No. 1, Jan. 1980, Optical Society of America, pp. 30-31.
Spillman, W. B. et al., "Schlieren Multimode Fiber-Optic Hydrophone", Applied Physics Letters 37(2), Jul. 15, 1980, American Institute of Physics, pp. 145-147.
Tietjen, B. W., "The Optical Grating Hydrophone", Journal of the Acoustical Society of America, Apr. 1981, pp. 993-997.
Jackson, "An Intensity Modulated Optical Hydrophone", Eastcon 1980, IEEE Meeting, pp. 42-46.

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