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Proceedings Paper

Performance of the fiber Bragg grating sensors at cryogenic temperatures
Author(s): Zhan-Sheng Guo; Junqian Zhang; Xingming Guo; Hongjiu Hu
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Paper Abstract

The strain and temperature sensing performance of FBG are studied in the temperature range of 123K to 273K by the experiment. The temperature sensitive, strain coefficient and cross-sensitivity coefficient of the sensors are derived analytically and verified by experiments. It is found that they are nonlinear. Cross sensitivity increase with lower temperature. At a constant temperature, the Bragg wavelength shift is linear with the longitudinal strain within the range of 5000 micro strains.

Paper Details

Date Published: 8 April 2008
PDF: 6 pages
Proc. SPIE 6932, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008, 69322N (8 April 2008); doi: 10.1117/12.779686
Show Author Affiliations
Zhan-Sheng Guo, Shanghai Univ. (China)
Junqian Zhang, Shanghai Univ. (China)
Xingming Guo, Shanghai Univ. (China)
Hongjiu Hu, Shanghai Univ. (China)


Published in SPIE Proceedings Vol. 6932:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008
Masayoshi Tomizuka, Editor(s)

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