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Proceedings Paper

Distributed hydrostatic pressure sensor using a thin-diameter and polarization-maintaining photonics crystal fiber based on Brillouin dynamic gratings
Author(s): Lei Teng; Yongkang Dong; Dengwang Zhou; Xiaoyi Bao; Liang Chen
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Paper Abstract

A distributed hydrostatic pressure sensor based on Brillouin dynamic gratings (BDGs) was proposed and demonstrated for the first time to the best of our knowledge. Through measuring the pressure-induced birefringence changes through exciting and probing the BDGs, the hydrostatic pressure sensing is realized. The thin-diameter PM-PCF is used as the fiber under test. The temperature can be compensated by measuring the temperature-induced Brillouin frequency shift (BFS) through differential pulse-width pair Brillouin optical time-domain analysis (DPP-BOTDA). A distributed measurement is reported with a 20-cm spatial resolution and measurement accuracy as high as 0.025 MPa.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103236Q (23 April 2017); doi: 10.1117/12.2263938
Show Author Affiliations
Lei Teng, Harbin Institute of Technology (China)
Yongkang Dong, Harbin Institute of Technology (China)
Dengwang Zhou, Harbin Institute of Technology (China)
Xiaoyi Bao, Univ. of Ottawa (Canada)
Liang Chen, Univ. of Ottawa (Canada)

Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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