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Optical Engineering

Finite element analysis of a novel weak-pressure sensor based on fiber Bragg gratings in photonic crystal fibers
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Paper Abstract

The fiber Bragg grating has been widely used in sensors. We have studied the spectral properties of uniform Bragg gratings in photonic crystal fibers under transverse pressure. By the finite element method, the relation between the birefringence and the pressure was simulated in bare photonic crystal fibers. The results show that the birefringence is changed even under weak pressure. A new method based on polarization-dependent loss is presented for measuring pressure. The maximal amplitude of the polarization-dependent loss varies linearly in the pressure range of 0 to 4 MPa with a slope of 0.75 MPa-1.

Paper Details

Date Published: 1 March 2009
PDF: 5 pages
Opt. Eng. 48(3) 034402 doi: 10.1117/1.3099717
Published in: Optical Engineering Volume 48, Issue 3
Show Author Affiliations
Ke Wen, The PLA Univ. of Science and Technology (China)
Hui Peng, The PLA Univ. of Science and Technology (China)
Jingyuan Wang, The PLA Univ. of Science and Technology (China)
Rong Wang, The PLA Univ. of Science and Technology (China)
Jianhua Li, The PLA Univ. of Science and Technology (China)


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