Infrared and Laser Engineering, Volume. 54, Issue 7, 20250047(2025)

Sensitivity adjustable substrate fiber Bragg grating strain sensor

Junxi LIANG1, Ying CHANG2, Yuanhao LI1, Yongzheng TAO1, Jia LIU1, Pinggang JIA1, and Guowen AN1
Author Affiliations
  • 1State Key Laboratory of Widegap Semiconductor Optoelectronic Materials and Technologies, North University of China, Taiyuan 030051, China
  • 2School of Mechanical and Electrical Engineering, Northwestern Polytechnical University, Xi’an 710100, China
  • show less
    Figures & Tables(12)
    Schematic diagram of sensor
    (a) Effect of width W on strain; (b) Effect of thickness T on strain; (c) Effect of length H on strain
    Schematic diagram of negative range adjustment process
    Physical picture of strain calibration system for room temperature sensor
    Experimental results of strain calibration at room temperature
    Results of sensitivity adjustment experiment
    (a) Experimental results of temperature sensitivity calibration of strain grating; (b) Experimental results of temperature sensitivity calibration of temperature compensated grating
    High temperature strain experiment system diagram
    High temperature strain experiment system diagram
    • Table 1. Negative range adjustment center wavelength value change table

      View table
      View in Article

      Table 1. Negative range adjustment center wavelength value change table

      Rotation angle/(°)The first change in central wavelength valueThe second change in central wavelength valueThe third change in central wavelength value
      01530.601530.211530.44
      451532.541531.951532.38
      901534.431534.061534.32
      1351536.351536.111536.28
      1801538.201538.051538.15
      2251540.131539.981540.02
      2701542.051541.951541.89
      315FractureFractureFracture
    • Table 2. Comparison of actual sensitivity and theoretical sensitivity under different L values

      View table
      View in Article

      Table 2. Comparison of actual sensitivity and theoretical sensitivity under different L values

      Experiment codeL valueLFBG valueL/LFBGTheoretical sensitivityActual sensitivityError value
      173.534.52.1301.2581.2831.98%
      250.534.51.4630.8640.8923.24%
      328.534.50.8260.4880.5053.48%
      420.534.50.5940.3510.350-0.28%
    • Table 3. Performance comparison of strain sensors with different adjustable sensitivity

      View table
      View in Article

      Table 3. Performance comparison of strain sensors with different adjustable sensitivity

      ItemsInitial sensitivity/pm·με−1Measuring range/µεSame substrate ?Temperature compensation errorAdjustment error
      He J0.580-1600NoNo5.26%
      Di Sante R0.782000-2000NoNoNo
      Qin Heying1.650-3000No5%5%
      Zhang Yuanyuan0.493000-3000NoNoNo
      This paper0.593000-3000(Adjustable)Yes3.1%4%
    Tools

    Get Citation

    Copy Citation Text

    Junxi LIANG, Ying CHANG, Yuanhao LI, Yongzheng TAO, Jia LIU, Pinggang JIA, Guowen AN. Sensitivity adjustable substrate fiber Bragg grating strain sensor[J]. Infrared and Laser Engineering, 2025, 54(7): 20250047

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category: 光通信与光传感

    Received: Jan. 16, 2025

    Accepted: --

    Published Online: Aug. 29, 2025

    The Author Email:

    DOI:10.3788/IRLA20250047

    Topics