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Proceedings Paper

Fiber laser hydrophone for low frequency signal detection
Author(s): Wentao Zhang; Fang Li; Yuliang Liu
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Paper Abstract

A fiber laser hydrophone (FLH) based on a flat diaphragm and an L shaped lever is presented. This hydrophone uses an L shaped lever to transfer the acoustic pressure induced defection of the flat diaphragm to the axial elongation of the fiber laser. The curve where the L shaped lever contacts the diaphragm is a segment of an Archimedes spiral, which is used to enhance the responsivity. To compensate the hydrostatic pressure, a capillary tube is fixed at the end of the hydrophone. Both theoretical and experimental investigations are presented in this paper. The result shows that the proposed design has a high sensitivity of a flat frequency response below 1 kHz.

Paper Details

Date Published: 30 January 2012
PDF: 6 pages
Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 835104 (30 January 2012); doi: 10.1117/12.912980
Show Author Affiliations
Wentao Zhang, Institute of Semiconductors (China)
Fang Li, Institute of Semiconductors (China)
Yuliang Liu, Institute of Semiconductors (China)

Published in SPIE Proceedings Vol. 8351:
Third Asia Pacific Optical Sensors Conference
John Canning; Gangding Peng, Editor(s)

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