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Proceedings Paper

Miniature fiber optic pressure sensor for turbine engines
Author(s): Yizheng Zhu; Gary Pickrell; Xingwei Wang; Juncheng Xu; Bing Yu; Ming Han; Kristie L. Cooper; Anbo Wang; Aditya Ringshia; Wing Ng
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Paper Abstract

In this paper, we present a miniature fiber optic pressure sensor. The sensor is extrinsic Fabry-Perot interferometer (EFPI) based with its FP cavity directly fabricated on the tip of the fiber by fusion splicing and chemical etching. The processes are simple, with no other materials but silica fibers involved. The sensor has the same dimension as the fiber itself, only 125μm in diameter. The length of the FP cavity and the interference pattern will change in response to ambient pressure variation. The signal is demodulated by tracing the spectrum shift. Sensitivity can be adjusted for different applications with low or high pressure range. Prototype sensors were fabricated and tested for static response. Dynamic measurements were performed in a turbine engine. Theoretical and experimental analysis of the sensor response are also presented.

Paper Details

Date Published: 8 December 2004
PDF: 8 pages
Proc. SPIE 5590, Sensors for Harsh Environments, (8 December 2004); doi: 10.1117/12.575631
Show Author Affiliations
Yizheng Zhu, Virginia Polytechnic Institute and State Univ. (United States)
Gary Pickrell, Virginia Polytechnic Institute and State Univ. (United States)
Xingwei Wang, Virginia Polytechnic Institute and State Univ. (United States)
Juncheng Xu, Virginia Polytechnic Institute and State Univ. (United States)
Bing Yu, Virginia Polytechnic Institute and State Univ. (United States)
Ming Han, Virginia Polytechnic Institute and State Univ. (United States)
Kristie L. Cooper, Virginia Polytechnic Institute and State Univ. (United States)
Anbo Wang, Virginia Polytechnic Institute and State Univ. (United States)
Aditya Ringshia, Virginia Polytechnic Institute and State Univ. (United States)
Wing Ng, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 5590:
Sensors for Harsh Environments
Anbo Wang, Editor(s)

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