30 January 2012 Fiber laser hydrophone for low frequency signal detection
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Proceedings Volume 8351, Third Asia Pacific Optical Sensors Conference; 835104 (2012) https://doi.org/10.1117/12.912980
Event: Asia Pacific Optical Sensors Conference, 2012, Sydney, Australia
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.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wentao Zhang, Wentao Zhang, Fang Li, Fang Li, Yuliang Liu, Yuliang Liu, } "Fiber laser hydrophone for low frequency signal detection", Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 835104 (30 January 2012); doi: 10.1117/12.912980; https://doi.org/10.1117/12.912980
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