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Chinese Optics Letters

Chinese Optics Letters


  • Vol. 6, Iss. 9 — Sep. 1, 2008
  • pp: 631–633

Fiber Bragg grating hydrophone with high sensitivity

Wentao Zhang, Yuliang Liu, and Fang Li  »View Author Affiliations

Chinese Optics Letters, Vol. 6, Issue 9, pp. 631-633 (2008)

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A fiber Bragg grating (FBG) hydrophone with high sensitivity was demonstrated. This hydrophone used a rubber diaphragm and a copper hard core as the sensing element. To compensate the hydrostatic pressure, a capillary tube was fixed at the end of the hydrophone. Theoretical analysis of the acoustic pressure sensitivity was given in this letter. Experiments were carried out to test the frequency response of the hydrophone. The result shows that when the Young's modulus of the diaphragm is higher, a flatter frequency response will be obtained.

© 2008 Chinese Optics Letters

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.4230) Fiber optics and optical communications : Multiplexing
(230.1480) Optical devices : Bragg reflectors

Wentao Zhang, Yuliang Liu, and Fang Li, "Fiber Bragg grating hydrophone with high sensitivity," Chin. Opt. Lett. 6, 631-633 (2008)

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