Graphene-coated microfiber FBG for highly sensitive gas sensing

Bai-Cheng Yao; Yu Wu; Anqi Zhang; Yang Cheng; Cai-bin Yu; Yuan Gong; Yun-Jiang Rao

doi:10.1117/12.2058502

2 June 2014 Graphene-coated microfiber FBG for highly sensitive gas sensing

Bai-Cheng Yao, Yu Wu, Anqi Zhang, Yang Cheng, Cai-bin Yu, Yuan Gong, Yun-Jiang Rao

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 915748 (2014) https://doi.org/10.1117/12.2058502
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

In this paper, a novel graphene-coated microfiber Bragg grating (GMFBG) sensor is proposed and demonstrated for detection of gas concentration, for the first time. Taking advantage of the surface field enhancement and polar molecular adsorption by the graphene film, we find that this structure is very sensitive to local chemical gas concentration, and the obtained sensitivities are 0.2 and 0.5ppm for NH3 and Xylene gas for tiny gas variation, respectively. Such a miniature GMFBG sensor could find applications in biological or chemical sensing, such as for trace analysis.

Citation Download Citation

Bai-Cheng Yao, Yu Wu, Anqi Zhang, Yang Cheng, Cai-bin Yu, Yuan Gong, and Yun-Jiang Rao "Graphene-coated microfiber FBG for highly sensitive gas sensing", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915748 (2 June 2014); https://doi.org/10.1117/12.2058502

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