Acta Photonica Sinica, Volume. 54, Issue 4, 0406006(2025)

Pressure Type Ocean Wave Height Sensor Based on Fiber Bragg Grating

Zhaokun LIU1... Dawei DU1, Qiang ZHAO1,2,*, Dongying CHEN1,**, Li HUI1, Wen ZHANG3, Peng SUN1,2 and Fengxiang GUO1 |Show fewer author(s)
Author Affiliations
  • 1Institute of Oceanographic Instrumentation,Qilu University of Technology(Shandong Academy of Sciences),Qingdao 266061,China
  • 2Laoshan Laboratory,Qingdao 266237,China
  • 3College of Meteorology and Oceanography,National University of Defense Technology,PLA,Changsha 410073,China
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    Figures & Tables(14)
    Schematic of FBG ocean wave height sensor profile
    FBG ocean wave height sensor size optimization design
    Pressure simulation of the FBG ocean wave height sensor
    Temperature simulation of the FBG ocean wave height sensor
    Pressure calibration of the FBG ocean wave height sensor
    Temperature calibration of the FBG ocean wave height sensor
    Hydrostatic experiment of the FBG ocean wave height sensor
    The nearshore deployment test of the FBG ocean wave height sensor
    The original signal before and after denoising
    Comparison of the three methods of zero line selection
    The comparison results of wave height characteristic values
    • Table 1. The design parameters of the FBG ocean wave height sensor

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      Table 1. The design parameters of the FBG ocean wave height sensor

      ParameterExplanationValue
      REffective radius of elastic diaphragm14 mm
      HEffective thickness of elastic diaphragm0.9 mm
      xEffective length of P-FBG9 mm
      μPoisson's ratio of elastic diaphragm0.35
      EYoung's modulus of elastic diaphragm128 GPa
      ΛPThe grating period of P-FBG1.608 μm
      ΛTThe grating period of T-FBG1.622 μm
    • Table 2. The number of effective waves for the three methods of zero line selection

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      Table 2. The number of effective waves for the three methods of zero line selection

      MethodThe number of effective waves
      SPA183
      Least squares fitting166
      Moving average156
    • Table 3. The comparison results of the FBG ocean wave height sensor and the SBF3-2 wave buoy

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      Table 3. The comparison results of the FBG ocean wave height sensor and the SBF3-2 wave buoy

      StatisticHsH0HmHa
      Mean deviation0.08 m0.13 m0.11 m0.06 m
      Maximum deviation0.36 m0.5 m0.4 m0.29 m
      RMSE0.1 m0.17 m0.13 m0.08 m
      Correlation r0.890.870.880.88
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    Zhaokun LIU, Dawei DU, Qiang ZHAO, Dongying CHEN, Li HUI, Wen ZHANG, Peng SUN, Fengxiang GUO. Pressure Type Ocean Wave Height Sensor Based on Fiber Bragg Grating[J]. Acta Photonica Sinica, 2025, 54(4): 0406006

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Oct. 11, 2024

    Accepted: Dec. 4, 2024

    Published Online: May. 15, 2025

    The Author Email: Qiang ZHAO (zhaoqiang@qlu.edu.cn), Dongying CHEN (chendongyingcdy@163.com)

    DOI:10.3788/gzxb20255404.0406006

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