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Proceedings Paper

High-sensitivity long-period fiber grating temperature sensor based on intensity measurement
Author(s): Yunqi Liu; Chunfeng Ge; Donghui Zhao; Zhiguo Liu; Zhuanyun Guo; Xiaoyi Dong; Hwa-Yaw Tam
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Paper Abstract

We design a kind of all-fiber high-sensitivity temperature sensor based on intensity measurement, by using long period fiber grating (LPG) as sensor element and using tunable erbium-doped fiber ring laser as optical source. In the temperature range of 74 degrees Celsius, the logarithm of the transmissive intensity of LPG is linear with the measured temperature and the linearity of sensing measurement can be repeated well. The resolution of temperature measurement is 0.1 degrees Celsius.

Paper Details

Date Published: 7 May 1999
PDF: 4 pages
Proc. SPIE 3740, Optical Engineering for Sensing and Nanotechnology (ICOSN '99), (7 May 1999); doi: 10.1117/12.347725
Show Author Affiliations
Yunqi Liu, Nankai Univ. (Singapore)
Chunfeng Ge, Nankai Univ. (China)
Donghui Zhao, Nankai Univ. (United Kingdom)
Zhiguo Liu, Nankai Univ. (China)
Zhuanyun Guo, Nankai Univ. (China)
Xiaoyi Dong, Nankai Univ. (China)
Hwa-Yaw Tam, Hong Kong Polytechnic Univ. (China)

Published in SPIE Proceedings Vol. 3740:
Optical Engineering for Sensing and Nanotechnology (ICOSN '99)
Ichirou Yamaguchi, Editor(s)

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