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BIBTEX RIS

Dual polarization fiber grating laser hydrophone

2009; Optica Publishing Group; Volume: 17; Issue: 22 Linguagem: Inglês

10.1364/oe.17.019544

ISSN

1094-4087

Autores

Bai‐Ou Guan, Yan-Nan Tan, Hwa‐Yaw Tam,

Tópico(s)

Optical measurement and interference techniques

Resumo

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.

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