Title :
Hydrostatic Pressure Insensitive Dual Polarization Fiber Grating Laser Hydrophone
Author :
Tan, Yan-Nan ; Zhang, Yang ; Guan, Bai-Ou
Author_Institution :
PolyU-DUT Joint Res. Center for Photonics, Dalian Univ. of Technol., Dalian, China
fDate :
5/1/2011 12:00:00 AM
Abstract :
A hydrostatic pressure insensitive fiber-optic hydrophone based on the integration of a dual polarization fiber grating laser and an elastic diaphragm is proposed and experimentally demonstrated. The diaphragm converts acoustic pressure into transversal force onto the fiber laser but shows no response to the hydrostatic pressure. Therefore, the beat frequency is sensitive to acoustic signal but insensitive to the hydrostatic pressure.
Keywords :
acousto-optical devices; diaphragms; diffraction gratings; fibre lasers; fibre optic sensors; hydrophones; hydrostatics; optical fibre polarisation; polarisation; acoustic pressure; acoustic signal; diaphragm; dual polarization fiber grating laser integration; hydrostatic pressure insensitive fiber optic hydrophone; transversal force; Fiber Bragg gratings; fiber lasers; fiber-optic sensors; hydrophones;
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2010.2087324
