Journal of Applied Optics, Volume. 46, Issue 4, 903(2025)

FBG flexible sensor based on new industrial resin

Zhihui SHEN1, Yiming XU2, and Guan LU1、*
Author Affiliations
  • 1School of Mechanical Engineering, Nantong University, Nantong 226019, China
  • 2School of Electrical Engineering and Automation, Nantong University, Nantong 226019, China
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    Figures & Tables(17)
    Schematic diagram of FBG
    Structure diagram of FBG sensor
    Schematic diagram of FBG flexible sensor design
    Strain transferring for different adhesive layer lengths and adhesive layer thicknesses
    Effect of different glue shear modulus on strain transfer rate
    Effect of thickness of packing layer on strain transfer rate
    FBG flexible sensors packed in different materials
    Simulation of FBG flexible sensor
    Spectral variation in FBG before and after packaging
    FBG flexible sensor detection system
    Load sensitivity of FBG flexible sensors
    Comparison of repeatability, linearity and hysteresis
    Temperature sensitivity of FBG flexible sensors
    • Table 1. Parameters of FBG

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      Table 1. Parameters of FBG

      封装类型光栅长度/ mm反射 率/%3dB带宽/ nm边模 抑制比/dB使用 温度/℃
      柔性树脂3>600.65±0.2≥15−40~85
      PDMS3>600.65±0.2≥15−40~85
      硅胶3>600.65±0.2≥15−40~85
      裸FBG3>600.65±0.2≥15−40~85
    • Table 2. Central wavelength shift data of FBG simulation

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      Table 2. Central wavelength shift data of FBG simulation

      封装类型FBG应变均值/ε波长偏移量/pm
      柔性树脂0.009411.42
      PDMS0.008610.37
      硅胶0.00749.01
    • Table 3. FBG load sensitivity and goodness of fit

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      Table 3. FBG load sensitivity and goodness of fit

      封装类别加载卸载
      灵敏度/ (pm·N−1拟合优度灵敏度/ (pm·N−1拟合优度
      柔性树脂封装4.6490.998 654.6390.998 63
      PDMS封装4.5970.998 624.5720.998 61
      硅胶封装4.6570.997 054.6360.996 75
      裸FBG4.7480.995 814.6660.995 15
    • Table 4. Temperature sensitivity of FBG sensors

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      Table 4. Temperature sensitivity of FBG sensors

      封装类别升温降温
      灵敏度/ (pm·℃−1拟合优度灵敏度/ (pm·℃−1拟合优度
      柔性树脂封装1.690.998 41.680.998 01
      PDMS封装1.610.997 81.610.997 66
      硅胶封装1.530.996 71.510.995 52
      裸FBG1.480.986 41.460.995 98
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    Zhihui SHEN, Yiming XU, Guan LU. FBG flexible sensor based on new industrial resin[J]. Journal of Applied Optics, 2025, 46(4): 903

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    Paper Information

    Category:

    Received: Oct. 9, 2024

    Accepted: --

    Published Online: Sep. 16, 2025

    The Author Email: Guan LU (陆观)

    DOI:10.5768/JAO202546.0405002

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