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Proceedings Paper

Pd-Ag film coated cascaded long period gratings for hydrogen gas sensing
Author(s): Zhen Yang; Xiujuan Yu; Xiaohui Chu; Min Zhang; Shurong Lai; Yanbiao Liao; Qisheng Li; Yi Zhang; Zhi Zhuang
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Paper Abstract

A Mach-Zehnder-like interferometer based on cascaded long period gratings with palladium silver (Pd-Ag) film coating is developed for monitoring the hydrogen concentration. The visibility of fringes is measured using Fourier analysis. The basic theory was given and preliminary experiment had been proved that this sensor can used to monitor the hydrogen concentration. The sensor showed a good response.

Paper Details

Date Published: 19 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77539R (19 May 2011); doi: 10.1117/12.885910
Show Author Affiliations
Zhen Yang, Tsinghua Univ. (China)
Xiujuan Yu, Heilongjiang Univ. (China)
Xiaohui Chu, Tsinghua Univ. (China)
Min Zhang, Tsinghua Univ. (China)
Shurong Lai, Tsinghua Univ. (China)
Yanbiao Liao, Tsinghua Univ. (China)
Qisheng Li, Institute of Structural Mechanics (China)
Yi Zhang, Institute of Structural Mechanics (China)
Zhi Zhuang, Institute of Structural Mechanics (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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