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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 33, Iss. 1 — Jan. 1, 2008
  • pp: 37–39

Fiber-optic hydrophone using a cylindrical Helmholtz resonator as a mechanical anti-aliasing filter

Zefeng Wang, Yongming Hu, Zhou Meng, and Ming Ni  »View Author Affiliations


Optics Letters, Vol. 33, Issue 1, pp. 37-39 (2008)
http://dx.doi.org/10.1364/OL.33.000037


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Abstract

Two Michelson interferometric fiber-optic hydrophones that use panda polarization-maintaining fibers and devices have been constructed and tested. The low-frequency acoustic sensitivities of both hydrophones are −159 dB re 1 rad/μPa. One of the hydrophones tested has a small cylindrical Helmholtz resonator that has a break point near 1200 Hz and a measured roll-off of approximately 50 dB/octave, and it is a hydrostatic-pressure-insensitive design. This hydrophone is a prototype device for a class of sensors that can be used to eliminate aliasing in future sonar systems. To our knowledge, this is the first time that such a fiber-optic hydrophone has been reported.

© 2008 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.2420) Fiber optics and optical communications : Fibers, polarization-maintaining
(230.1150) Optical devices : All-optical devices

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: October 3, 2007
Revised Manuscript: November 8, 2007
Manuscript Accepted: November 17, 2007
Published: December 18, 2007

Citation
Zefeng Wang, Yongming Hu, Zhou Meng, and Ming Ni, "Fiber-optic hydrophone using a cylindrical Helmholtz resonator as a mechanical anti-aliasing filter," Opt. Lett. 33, 37-39 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-1-37


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