Optofluidic in-fiber on-line ethanol sensing based on graphene oxide integrated hollow optical fiber with suspended core

Danheng Gao, Xinghua Yang, Pingping Teng, Depeng Kong, Zhihai Liu, Jun Yang, Meng Luo, Zhanao Li, Xingyue Wen, Libo Yuan, Kang Li, Nigel Copner

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Abstract

In this study, a novel in-fiber optofluidic trace ethanol sensor is proposed firstly. The microstructured hollow fiber (MHF) with a suspended core is a key part of the overall device which is integrated with graphene oxide (GO). The GO can be uniformly trapped on the whole surface of the suspended core in the MHF by using evanescent field inducing method. When trace microfluidic ethanol passes through the in-fiber device, the light intensity of the suspended core can be significantly modulated through the interaction between the GO on the core and ethanol. The device presents an excellent linearity on-line response with an average sensitivity of 0.16 dB/% with linear regression equation of y = 0.16x + 25.989. In general, this compact optofluidic in-fiber trace ethanol sensor can be utilized as for on-line detection of trace amounts of ethanol in special environments.
Original languageEnglish
Article number102250
Pages (from-to)102250
JournalOptical Fiber Technology
Volume58
Early online date25 May 2020
DOIs
Publication statusPublished - 1 Sep 2020

Keywords

  • In-fiber device
  • Optofluidic sensor
  • Microstructuraloptical fiber
  • Graphene Oxide

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