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Proceedings Paper

Humidity sensing of microfiber Bragg grating
Author(s): Min Shao; Xueguang Qiao; Zhenan Jia; Haiwei Fu; Yinggang Liu; Xue Zhao; Lipin Li
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Paper Abstract

A humidity sensor based on microfiber Bragg grating is proposed and demonstrated. The microfiber Bragg grating is obtained through chemical etching commercial fiber Bragg grating. The experimental results show that the central wavelength of the microfiber Bragg grating has red shift with humidity increasing, while the power decreases. The relative humidity sensitivity of the microfiber Bragg grating with diameter of 8.9um is 3pm/%RH in the range of 55%-80%RH. Furthermore, the sensor has a linear response to humidity with linear fitting of 0.991. The sensor possesses advantages of easy fabrication and low cost.

Paper Details

Date Published: 19 February 2015
PDF: 6 pages
Proc. SPIE 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014), 944916 (19 February 2015); doi: 10.1117/12.2075376
Show Author Affiliations
Min Shao, Xi'an Shiyou Univ. (China)
Northwestern Polytechnical Univ. (China)
Xueguang Qiao, Northwest Univ. (China)
Zhenan Jia, Xi'an Shiyou Univ. (China)
Haiwei Fu, Xi'an Shiyou Univ. (China)
Yinggang Liu, Xi'an Shiyou Univ. (China)
Xue Zhao, Xi'an Shiyou Univ. (China)
Lipin Li, Xi'an Shiyou Univ. (China)


Published in SPIE Proceedings Vol. 9449:
The International Conference on Photonics and Optical Engineering (icPOE 2014)
Ailing Tian; Anand Asundi; Weiguo Liu; Chunmin Zhang, Editor(s)

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