Humidity sensing of microfiber Bragg grating

Min Shao; Xueguang Qiao; Zhenan Jia; Haiwei Fu; Yinggang Liu; Xue Zhao; Lipin Li

doi:10.1117/12.2075376

19 February 2015 Humidity sensing of microfiber Bragg grating

Min Shao, Xueguang Qiao, Zhenan Jia, Haiwei Fu, Yinggang Liu, Xue Zhao, Lipin Li

Proceedings Volume 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014); 944916 (2015) https://doi.org/10.1117/12.2075376
Event: The International Conference on Photonics and Optical Engineering and the Annual West China Photonics Conference (icPOE 2014), 2014, Xi'an, China

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.

Citation Download Citation

Min Shao, Xueguang Qiao, Zhenan Jia, Haiwei Fu, Yinggang Liu, Xue Zhao, and Lipin Li "Humidity sensing of microfiber Bragg grating", Proc. SPIE 9449, The International Conference on Photonics and Optical Engineering (icPOE 2014), 944916 (19 February 2015); https://doi.org/10.1117/12.2075376

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