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Proceedings Paper

Highly integrated FP/FBG sensor for simultaneous measurement of strain and temperature under high temperature
Author(s): Qin Liu; Zeng-Ling Ran; Yun-Jiang Rao; Shu-Cheng Luo; Hui-Qin Yang; Ya Huang
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Paper Abstract

An inline fiber-optic micro Fabry–Perot (MFP) cavity and a short fiber Bragg grating (SFBG) is overlapped to form a highly integrated MFP/SFBG sensor for simultaneous measurement of temperature and strain under high temperature (300°C). The F-P cavity is fabricated on an all-silica fiber by using the 157nm laser micro-machining technique while the SFBG is written on a GeO2 doped high temperature photon sensitive fiber at the same position of the MFP cavity. As the MFP cavity and the SFBG have different sensitivity coefficients to temperature and strain, they can be utilized for realization of dual parameters measurement. Experimental results show that simultaneous measurement of strain and temperature is achieved under high temperature up to 300°C.

Paper Details

Date Published: 2 June 2014
PDF: 4 pages
Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91570P (2 June 2014); doi: 10.1117/12.2058505
Show Author Affiliations
Qin Liu, Univ. of Electronic Science and Technology of China (China)
Zeng-Ling Ran, Univ. of Electronic Science and Technology of China (China)
Yun-Jiang Rao, Univ. of Electronic Science and Technology of China (China)
Shu-Cheng Luo, Univ. of Electronic Science and Technology of China (China)
Hui-Qin Yang, Univ. of Electronic Science and Technology of China (China)
Ya Huang, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 9157:
23rd International Conference on Optical Fibre Sensors
José M. López-Higuera; Julian D. C. Jones; Manuel López-Amo; José Luis Santos, Editor(s)

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