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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 33, Iss. 11 — Jun. 1, 2008
  • pp: 1267–1269

Novel mechanical antialiasing fiber-optic hydrophone with a fourth-order acoustic low-pass filter

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


Optics Letters, Vol. 33, Issue 11, pp. 1267-1269 (2008)
http://dx.doi.org/10.1364/OL.33.001267


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Abstract

A novel mechanical antialiasing interferometric fiber-optic hydrophone with a fourth-order acoustic low-pass filter has been fabricated and demonstrated for the first time to the best of our knowledge. The low-frequency lumped parameters model of the hydrophone is constructed based on the theories of an electroacoustic analogy, and the acoustic performance is predicted by the circuit analysis methods. The measured low-frequency response is very flat, and the acoustic sensitivity is about 140 dB with regard to 1 rad μ Pa . The system has two measured resonant frequencies, i.e., 850 and 4000 Hz , which is in agreement with the simulation results. It is expected that this new type of fiber-optic hydrophone will become an important class of sensors used to eliminate the aliasing in future sonar systems.

© 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: January 28, 2008
Revised Manuscript: April 18, 2008
Manuscript Accepted: April 28, 2008
Published: May 30, 2008

Virtual Issues
Vol. 3, Iss. 7 Virtual Journal for Biomedical Optics

Citation
Zefeng Wang, Yongming Hu, Zhou Meng, Hong Luo, and Ming Ni, "Novel mechanical antialiasing fiber-optic hydrophone with a fourth-order acoustic low-pass filter," Opt. Lett. 33, 1267-1269 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-11-1267


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References

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