Fabrication and test of novel fiber Bragg grating based humidity sensor

Guofeng Dong; Xingzhong Liang; Lin Zhao; Yuhui Feng; Jiqiang Wang; Tongyu Liu

doi:10.1117/12.2524652

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10 May 2019 Fabrication and test of novel fiber Bragg grating based humidity sensor

Guofeng Dong, Xingzhong Liang, Lin Zhao, Yuhui Feng, Jiqiang Wang, Tongyu Liu

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Proceedings Volume 11068, Second Symposium on Novel Technology of X-Ray Imaging; 1106821 (2019) https://doi.org/10.1117/12.2524652
Event: Second Symposium on Novel Technology of X-Ray Imaging, 2018, Hefei, China

Abstract

Optical humidity measurement is essential in current industry, especially in environment with adverse electromagnetic field and strong corrosion. This paper focus on the fabrication and test of a novel fiber bragg grating based humidity sensor. The sensor is fabricated by uniformly coating humidity sensitive material on fiber bragg grating. The sensing characteristic test of the sensor shows: the wavelength shift following humidity is linear; the minimum response time of the 2-layer coated sensor is 10 s with sensitive coefficient can be controlled by changing coating time; hygroscopic hysteresis of 3-layer coated sensor is 2.7`%RH. Therefore, the sensor is promising to be used to meet the quick response and in vivo measurement demand in industry.

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Guofeng Dong, Xingzhong Liang, Lin Zhao, Yuhui Feng, Jiqiang Wang, and Tongyu Liu "Fabrication and test of novel fiber Bragg grating based humidity sensor", Proc. SPIE 11068, Second Symposium on Novel Technology of X-Ray Imaging, 1106821 (10 May 2019); https://doi.org/10.1117/12.2524652

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