Acta Photonica Sinica, Volume. 50, Issue 12, 1206003(2021)

Optical Fiber and Gelatin Based Fabry-Perot Interferometric Humidity Sensor

Yusong ZHONG1...2, Xinyong DONG1,2,*, Pengbai XU1,2, and Jun YANG12 |Show fewer author(s)
Author Affiliations
  • 1School of Information Engineering, Guangdong University of Technology, Guangzhou 510006, China
  • 2Guangdong Provincial Key Laboratory of Information Photonics Technology, Guangdong University of Technology, Guangzhou 510006, China
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    Figures & Tables(11)
    Schematic diagram of the proposed sensing probe
    Micrograph of the proposed FPI sensing probe
    Experimental setup
    Spectra of the FPI sensing probe with different hollow core fiber lengths
    Spectra of the sensor at different relative humidity
    Variation of the sensor wavelength with relative humidity
    Repetitive experiment of the sensor
    Variation of the sensor wavelength with relative humidity at different temperatures
    Stability measurement results of the sensor at different relative humidity
    Variation of the sensor wavelength t with temperature
    • Table 1. Performance comparison of some reported optical fiber humidity sensors

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      Table 1. Performance comparison of some reported optical fiber humidity sensors

      ReferenceTypeMeasuring range/(%RH)Sensitivity
      3Loop resonator30~500.053 7 nm/%RH
      8MI20~40/40~850.025/0.6 nm/%RH

      9

      17

      18

      22

      23

      28

      Proposed

      MZI

      FPI

      FPI

      FPI

      MI

      MI

      FPI

      13.77~77.87

      13.47~81.34

      20~90

      20~95

      57.3~83.5

      45.0~81.7

      20~80

      -0.090 1 nm/%RH

      117.25 pm/%RH

      0.054 5 nm/%RH

      0.13 nm/%RH

      135 pm/%RH

      -0.185 nm/%RH

      192 pm/%RH

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    Yusong ZHONG, Xinyong DONG, Pengbai XU, Jun YANG. Optical Fiber and Gelatin Based Fabry-Perot Interferometric Humidity Sensor[J]. Acta Photonica Sinica, 2021, 50(12): 1206003

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Jun. 18, 2021

    Accepted: Aug. 19, 2021

    Published Online: Jan. 25, 2022

    The Author Email: DONG Xinyong (dongxy@gdut.edu.cn)

    DOI:10.3788/gzxb20215012.1206003

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