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

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

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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

Link(s)

DOI

DOI
Check@CityULib
Link to Scopus https://www.scopus.com/record/display.uri?eid=2-s2.0-84897461749&origin=recordpage
Permanent Link https://scholars.cityu.edu.hk/en/publications/publication(594c70f2-dcef-43f9-99ca-4afb43d1182a).html

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.

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High Sensitivity Keyphrases
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Gas Sensing Keyphrases
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Graphene Coating Keyphrases
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Microfiber Bragg Gr... Keyphrases
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gases INIS
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gratings INIS
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sensitivity INIS
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graphene INIS
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Bragg Cell Engineering
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Graphene Engineering
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Citation Format(s)

[ RIS ] [ BibTeX ]
Graphene-coated microfiber Bragg grating for high-sensitivity gas sensing. / Wu, Yu; Yao, Baicheng; Zhang, Anqi et al.
In: Optics Letters, Vol. 39, No. 5, 01.03.2014, p. 1235-1237.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review