Development of Optical Fiber Strain Calibration Device

Authors:
  • TBTao Bo
    Tao Bo
  • JHJiacheng Hu
    Jiacheng Hu
  • ZMZhu Minghao
    Zhu Minghao
  • CPCao Pengfei
    Cao Pengfei
  • LJLin Jiejun
    Lin Jiejun
  • SXShen Xiaoyan
    Shen Xiaoyan
Open Access
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Abstract
The Brillouin distributed sensing system is sensitive to the crossover between strain and temperature. The temperature and strain can be measured simultaneously through decoupling. However, there is no suitable method to calibrate and trace the strain measurement. Therefore, a method of calibrating fiber strain by grating ruler is proposed, the decoding circuit of grating ruler is designed, and the calibration device of optical fiber strain is built. The experimental results show that the uncertainty reaches 5.90 μm (k = 2) in the range of 0 ∼ 1000 μm, and the measurement of optical fiber strain can be traced back to the national length standard.