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Proceedings Paper

Fiber optic hydrogen sensor resisting temperature interference
Author(s): Yi Zhang; Qi Sheng Li; Zhi Zhuang; Min Zhang; Zhen Yang; Yan Biao Liao
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Paper Abstract

The principle of an extrinsic Fabry-Perot interferometric (EFPI) optical fiber hydrogen sensor is introduced in the paper. In order to carry out the mathematic model of the relationship between the change of Fabry-Perot gap length and hydrogen concentration, the stress transfer model of the sensor is analyzed. Two channels temperature compensation method is used to avoid the interference caused by the variation of the environmental temperature, so the stability of the system is enhanced. The validity of theory has been proved by means of investigating the responsibility of the sensor in a function of the hydrogen concentration, and the analytic data was close to the experiment results.The feasibility of the sensor has been validated by the temperature experiment.

Paper Details

Date Published: 18 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775369 (18 May 2011); doi: 10.1117/12.883236
Show Author Affiliations
Yi Zhang, Institute of Structural Mechanics (China)
Qi Sheng Li, Institute of Structural Mechanics (China)
Zhi Zhuang, Institute of Structural Mechanics (China)
Min Zhang, Tsinghua Univ. (China)
Zhen Yang, Tsinghua Univ. (China)
Yan Biao Liao, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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