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Proceedings Paper

A new fiber Fabry-Perot cavity sensor
Author(s): Yingjun Gao; Zhilv Zhang; Zhonghua Zhao; Yufeng Luo; Mi Zhou; Tao Ding
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Paper Abstract

A new optical fiber Fabry-Perot (F-P) cavity sensor for liquid level detection was developed. The end of a flexible metal bellows, which can sustain a large strain displacement, is suggested to be one surface of the F-P cavity. Both electronic hardware and demodulation scheme in software were developed for fringes counting and direction discrimination of the liquid level. A scheme for temperature compensation was proposed. A prototype of the liquid level sensor was fabricated and the experiments for air pressure and water level measurement were carried out. Because the interference fringe counting technique was used for signal demodulation, the noise resistance capability of the sensor against optical power fluctuation and other disturbances is greatly improved.

Paper Details

Date Published: 24 January 2008
PDF: 6 pages
Proc. SPIE 6829, Advanced Materials and Devices for Sensing and Imaging III, 682910 (24 January 2008); doi: 10.1117/12.762835
Show Author Affiliations
Yingjun Gao, Jinan Univ. (China)
Zhilv Zhang, Jinan Univ. (China)
Zhonghua Zhao, Jinan Univ. (China)
Yufeng Luo, Jinan Univ. (China)
Mi Zhou, Jinan Univ. (China)
Tao Ding, Jinan Univ. (China)

Published in SPIE Proceedings Vol. 6829:
Advanced Materials and Devices for Sensing and Imaging III
Anbo Wang; Yimo Zhang; Yukihiro Ishii, Editor(s)

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