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Proceedings Paper

A novel FBG pressure sensor with high sensitivity
Author(s): Shiya He; Shuyang Hu; Dawei Tian; Kuanxin Yu; Qida Zhao; Jinfeng Zhou; Li Wang
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Paper Abstract

A high-sensitivity fiber Bragg grating (FBG) pressure sensor has been designed and studied. Confining some gas inside a glass cylinder with a close glass piston which can move smoothly along the cylinder, and sticking two ends of a fiber Bragg grating on the outer side of the cylinder and piston respectively. The variation of the external pressure results in the change of the tension that the fiber grating is subjected to and then the pressure can be measured by the measurement of the Bragg wavelength of the FBG. The pressure sensitivity coefficient is up to -0.7676/MPa, which is about 3.88×105 times the value of bare fiber Bragg gratings, the highest sensitivity ever reported. The sensor can be used to potential applications in the measurement of air pressure, hydraulic pressure and vibration in the range of low pressure.

Paper Details

Date Published: 20 January 2005
PDF: 4 pages
Proc. SPIE 5633, Advanced Materials and Devices for Sensing and Imaging II, (20 January 2005); doi: 10.1117/12.565187
Show Author Affiliations
Shiya He, Beijing Univ. of Technology (China)
Shuyang Hu, Beijing Univ. of Technology (China)
Dawei Tian, Beijing Univ. of Technology (China)
Kuanxin Yu, Beijing Univ. of Technology (China)
Qida Zhao, Beijing Univ. of Technology (China)
Jinfeng Zhou, Beijing Univ. of Technology (China)
Li Wang, Beijing Univ. of Technology (China)

Published in SPIE Proceedings Vol. 5633:
Advanced Materials and Devices for Sensing and Imaging II
Anbo Wang; Yimo Zhang; Yukihiro Ishii, Editor(s)

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