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Proceedings Paper

Miniature fiber optic pressure and temperature sensors
Author(s): Juncheng Xu; Xingwei Wang; Kristie L. Cooper; Gary R. Pickrell; Anbo Wang
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Paper Abstract

New miniature extrinsic Fabry-Perot interferometric (MEFPI) optical fiber sensors with a size of 125μm in diameter are presented, which are ideal for applications where the operation space is highly restricted. The temperature sensor can work up to 800°C with a sensitivity of 0.46nm/°C. The pressure sensor exhibited a sensitivity of about 0.36nm/psi. The sensitivities of the pressure and temperature sensor can be controlled with high precision during fabrication. In addition, their Fabry-Perot cavity lengths can be controlled with a resolution of several nanometers, which provides excellent flexibility in sensor design and signal demodulation. The sensors are composed entirely of fused silica, which is very reliable, biocompatible, corrosion resistant and immune to electromagnetic interference (EMI).

Paper Details

Date Published: 10 November 2005
PDF: 6 pages
Proc. SPIE 6004, Fiber Optic Sensor Technology and Applications IV, 600403 (10 November 2005); doi: 10.1117/12.630910
Show Author Affiliations
Juncheng Xu, Virginia Polytechnic Institute and State Univ. (United States)
Xingwei Wang, Virginia Polytechnic Institute and State Univ. (United States)
Kristie L. Cooper, Virginia Polytechnic Institute and State Univ. (United States)
Gary R. Pickrell, Virginia Polytechnic Institute and State Univ. (United States)
Anbo Wang, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 6004:
Fiber Optic Sensor Technology and Applications IV
Michael A. Marcus; Brian Culshaw; John P. Dakin, Editor(s)

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