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Proceedings Paper

High-sensitivity pressure sensor based on a fiber Bragg grating
Author(s): Hao-Jan Sheng; Ming-Yue Fu; Tzu-Chiang Chen; Chia-Min Lin; Wen-Fung Liu; Sheau-Shong Bor
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Paper Abstract

An all-fiber pressure sensor based on a fiber Bragg grating with the pressure sensitivity of 2.2x10-2 MPa-1 has been demonstrated. The physical configuration includes a FBG encapsulated in a polymer-half-filled metal cylinder with its end bonded to the central of a round plate attached to the surface of polymer, and the Young’s modulus of the polymer is four orders lower than FBG. This cylinder has two opening on opposite side of the wall at the polymer part. Under the pressure environment, the polymer can be pressurized along one radial direction only, and responds an axial force acting on the round plate, producing an axial strain on FBG. With a nice linearity, this sensor should be applied potentially for the measurement of mediums pressure, liquid level and depth underwater.

Paper Details

Date Published: 8 March 2004
PDF: 7 pages
Proc. SPIE 5272, Industrial and Highway Sensors Technology, (8 March 2004); doi: 10.1117/12.514684
Show Author Affiliations
Hao-Jan Sheng, National Defense Univ. (Taiwan)
Ming-Yue Fu, National Defense Univ. (Taiwan)
Tzu-Chiang Chen, National Defense Univ. (Taiwan)
Chia-Min Lin, Feng-Chia Univ. (Taiwan)
Wen-Fung Liu, Feng-Chia Univ. (Taiwan)
Sheau-Shong Bor, Feng-Chia Univ. (Taiwan)

Published in SPIE Proceedings Vol. 5272:
Industrial and Highway Sensors Technology
Brian Culshaw; Samuel David Crossley; Helmut E. Knee; Michael A. Marcus; John P. Dakin, Editor(s)

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