Fiber Acoustic Sensor Based on Polarization-Maintaining Photonic Crystal Fiber Cascaded with a Long Period Grating in a Sagnac Loop

Xin Fu,Ping Lu,Jing Chen,Shun Wang,Li Liu,Hao Liao,Wenjun Ni,Deming Liu,Jiangshan Zhang

Asia Communications and Photonics Conference 2015 (2015), paper AM1D.6（2015）

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摘要

A fiber acoustic sensor was proposed. A long period grating is the sensing element with a plastic membrane as a transducer. In experiment acoustic signals of 100-4000Hz were measured and the sensitivity is about 3mV/Pa.

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关键词

fiber acoustic sensor,photonic crystal,long period grating,polarization-maintaining

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