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Optics Letters

Optics Letters


  • Vol. 5, Iss. 1 — Jan. 1, 1980
  • pp: 30–31

Moving fiber-optic hydrophone

W. B. Spillman, Jr. and R. L. Gravel  »View Author Affiliations

Optics Letters, Vol. 5, Issue 1, pp. 30-31 (1980)

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A fiber-optic hydrophone based on an intensity-modulation mechanism is described. The device possesses sufficient sensitivity to detect typical deep-sea noise levels in the frequency range 100 Hz to 1 kHz and to detect static displacements of 8.3 × 10−3 Å. It is not susceptible to phase noise and is insensitive to static-pressure head variations. The hydrophone is passive in nature and requires no electrical power. Ease of fabrication and potential low cost make this device an attractive candidate for incorporation into practical fiber-optic acoustic sensing arrays.

© 1980 Optical Society of America

Original Manuscript: September 24, 1979
Published: January 1, 1980

W. B. Spillman and R. L. Gravel, "Moving fiber-optic hydrophone," Opt. Lett. 5, 30-31 (1980)

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