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, Fang Li, 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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