High-sensitivity long-period fiber grating temperature sensor based on intensity measurement

Yunqi Liu; Chunfeng Ge; Donghui Zhao; Zhiguo Liu; Zhuanyun Guo; Xiaoyi Dong; Hwa-Yaw Tam

doi:10.1117/12.347725

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7 May 1999 High-sensitivity long-period fiber grating temperature sensor based on intensity measurement

Yunqi Liu, Chunfeng Ge, Donghui Zhao, Zhiguo Liu, Zhuanyun Guo, Xiaoyi Dong, Hwa-Yaw Tam

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Proceedings Volume 3740, Optical Engineering for Sensing and Nanotechnology (ICOSN '99); (1999) https://doi.org/10.1117/12.347725
Event: Optical Engineering for Sensing and Nanotechnology (ICOSN '99), 1999, Yokohama, Japan

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.

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Yunqi Liu, Chunfeng Ge, Donghui Zhao, Zhiguo Liu, Zhuanyun Guo, Xiaoyi Dong, and Hwa-Yaw Tam "High-sensitivity long-period fiber grating temperature sensor based on intensity measurement", Proc. SPIE 3740, Optical Engineering for Sensing and Nanotechnology (ICOSN '99), (7 May 1999); https://doi.org/10.1117/12.347725

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