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Title: Dual polarization fiber grating laser hydrophone
Authors: Guan, Bai-ou
Tan, Yan-Nan
Tam, Hwa-yaw
Subjects: Diaphragms
Fiber Bragg gratings
Frequency allocation
Issue Date: 26-Oct-2009
Publisher: Optical Society of America
Source: Optics express, 26 oct. 2009, v. 17, no. 22, p. 19544-19550.
Abstract: A novel 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 transforms the acoustic pressure into transversal force acting on the laser cavity which changes the fiber birefringence and therefore the beat frequency between the two polarization lines. The proposed hydrophone has advantages of ease of interrogation, absolute frequency encoding, and capability to multiplex a number of sensors on a single fiber by use of frequency division multiplexing technique.
Rights: © 2009 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Type: Journal/Magazine Article
DOI: 10.1364/OE.17.019544
ISSN: 1094-4087
Appears in Collections:EE Journal/Magazine Articles

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