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Proceedings Paper

Hybrid LPFG/MEFPI sensor for simultaneous measurement of high-temperature and strain
Author(s): Yun-Jiang Rao; Zeng-Ling Ran; Xian Liao; Hong-You Deng
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Paper Abstract

A hybrid fiber-optic sensor consisting of a long-period fiber grating (LPFG) and a micro extrinsic Fabry-Perot (F-P) interferometric (MEFPI) sensor is proposed and demonstrated for simultaneous measurement of high-temperature and strain. The LPFG written by using high-frequency CO2 laser pulses is used for high-temperature measurement while the MEFPI sensor fabricated by using 157nm F2 laser pulses is used for strain measurement under high temperature. The distinguishing feature of such a hybrid fiber-optic sensor is that it can stand for high temperature of up to 650°C and achieve precise measurement of strain under high temperature conditions simultaneously.

Paper Details

Date Published: 16 May 2008
PDF: 4 pages
Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70043H (16 May 2008); doi: 10.1117/12.785768
Show Author Affiliations
Yun-Jiang Rao, Univ. of Electronic Science & Technology of China (China)
Chongqing Univ. (China)
Zeng-Ling Ran, Univ. of Electronic Science & Technology of China (China)
Xian Liao, Univ. of Electronic Science & Technology of China (China)
Hong-You Deng, Univ. of Electronic Science & Technology of China (China)


Published in SPIE Proceedings Vol. 7004:
19th International Conference on Optical Fibre Sensors

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