Graphene-coated microfiber Bragg grating for high-sensitivity gas sensing

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Yu Wu
  • Baicheng Yao
  • Anqi Zhang
  • Yunjiang Rao
  • Zegao Wang
  • Yang Cheng
  • Yuan Gong
  • Weili Zhang
  • Yuanfu Chen

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)1235-1237
Journal / PublicationOptics Letters
Volume39
Issue number5
Online published24 Feb 2014
Publication statusPublished - 1 Mar 2014

Abstract

A graphene coated microfiber Bragg grating (GMFBG) for gas sensing is reported in this Letter. Taking advantage of the surface field enhancement and gas absorption of a GMFBG, we demonstrate an ultrasensitive approach to detect the concentration of chemical gas. The obtained sensitivities are 0.2 and 0.5 ppm for NH3 and xylene gas, respectively, which are tens of times higher than that of a GMFBG without graphene for tiny gas concentration change detection. Experimental results indicate that the GMFBG-based NH3 gas sensor has fast response due to its highly compact structure. Such a miniature fiber-optic element may find applications in high sensitivity gas sensing and trace analysis. © 2014 Optical Society of America.

Citation Format(s)

Graphene-coated microfiber Bragg grating for high-sensitivity gas sensing. / Wu, Yu; Yao, Baicheng; Zhang, Anqi; Rao, Yunjiang; Wang, Zegao; Cheng, Yang; Gong, Yuan; Zhang, Weili; Chen, Yuanfu; Chiang, K. S.

In: Optics Letters, Vol. 39, No. 5, 01.03.2014, p. 1235-1237.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal