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Proceedings Paper

Simultaneous measurement of refractive index and temperature based on a partial cone-shaped FBG
Author(s): Liang Qi; Chun-Liu Zhao; Shuqin Zhang; Zaixuan Zhang; Shangzhong Jin
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Paper Abstract

A refractive index and temperature simultaneous measurement sensor based on a partial cone-shaped fiber Bragg grating (FBG) was demonstrated. The bandwidth of the partial cone-shaped FBG is only effected by the surround refractive index (SRI), while the wavelength decided by the un-etched FBG is only sensitive to temperature. Utilizing the obvious difference of the bandwidth and the wavelength on temperature and the refractive index, two parameters can be distinguished and measured simultaneously using one partial cone-shaped FBG. Experimental results show that the proposed sensor has a SRI sensitivity of -13.669 nm/RIU in the range of 1.33~1.42 and a temperature sensitivity of 9.8 pm/°C in the range of 20~80°C.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84214B (17 October 2012); doi: 10.1117/12.970495
Show Author Affiliations
Liang Qi, China Jiliang Univ. (China)
Chun-Liu Zhao, China Jiliang Univ. (China)
Shuqin Zhang, China Jiliang Univ. (China)
Zaixuan Zhang, China Jiliang Univ. (China)
Shangzhong Jin, China Jiliang Univ. (China)

Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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