U-shape panda polarization-maintaining microfiber sensor coated with graphene oxide for relative humidity measurement

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

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Author(s)

  • Ling Chen
  • Bin Liu
  • Juan Liu
  • Jinhui Yuan
  • Tao Wu
  • Meng-Yu Wang
  • Sheng-Peng Wan
  • Xing-Dao He
  • Qiang Wu

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)6308-6314
Journal / PublicationJournal of Lightwave Technology
Volume39
Issue number19
Online published13 Jul 2021
Publication statusPublished - 1 Oct 2021

Abstract

A new U-shape panda polarization-maintaining fiber (PPMF) based microfiber interferometer coated with graphene oxide (GO) film was proposed and experimentally demonstrated for relative humidity (RH) sensing. Experimental results show that the U-shape sensor has refractive index (RI) sensitivity of 1692.5 nm/RIU in the RI range of 1.33 when the diameter of the taper waist is 10.08 µm. The surface of the U-shape sensor was then modified chemically and coated with a thin layer of GO film (59.64 nm) for RH detection and the sensitivity is proportional to RH: as RH increases from 30% to 98%, the sensitivity increases from 0.111 to 0.361 nm/%RH and the response time is 0.28 s. In addition, the cross sensitivity to temperature, stability, reproducibility, and response/recovery time of the RH sensor were studied in detail. The proposed U-shape fiber RH sensor has advantage of high sensitivity, good reproducibility and fast response (0.28 s), which has potential application in areas requiring dynamic measurement of RH variations such as industrial product fabrication process control and breath state monitoring.

Research Area(s)

  • Graphene, graphene oxide, microfiber interferometer, Optical fiber sensors, Optical surface waves, Relative humidity, Sensitivity, Sensors, Silicon, Surface treatment, Ushape fiber

Citation Format(s)

U-shape panda polarization-maintaining microfiber sensor coated with graphene oxide for relative humidity measurement. / Chen, Ling; Liu, Bin; Liu, Juan; Yuan, Jinhui; Chan, Hau Ping; Wu, Tao; Wang, Meng-Yu; Wan, Sheng-Peng; He, Xing-Dao; Wu, Qiang.

In: Journal of Lightwave Technology, Vol. 39, No. 19, 01.10.2021, p. 6308-6314.

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