Optics and Precision Engineering, Volume. 32, Issue 15, 2344(2024)

Fiber optic temperature sensor based on enhanced harmonic vernier effect

Zixi LIN1...3, Yuting LI2,3, Yuqiang YANG1,2,4,*, Yitong LI2,3,4,*, and Yuying ZHANG24 |Show fewer author(s)
Author Affiliations
  • 1Shenzhen Institute, Guangdong Ocean University, Shenzhen5820, China
  • 2Guangdong Provincial Key Laboratory of Intelligent Equipment for South China Sea Marine Ranching, Guangdong Ocean University, Zhanjiang54088, China
  • 3College of Electronic and Information Engineering,Guangdong Ocean University, Zhanjiang524088, China
  • 4Research Center of Guangdong Smart Oceans Sensor Networks and Equipment Engineering, Guangdong Ocean University, Zhanjiang52088, China
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    Figures & Tables(10)
    Schematic diagram of temperature sensor employing a cascade configuration of SI and FPI
    Variation of interference spectra of FPI and SI with temperature increased from T0 to T0+1 ℃
    Cascade interference changes of FPI and SI with temperature increased from T0 to T0+1 ℃
    Preparation process of FPI and SI
    Displacement spectrograms for single FPI and SIs
    Spectral shifts of cascade SI and FPI at 30 ℃ to 31 ℃
    Peak wavelength of SI and FPI interference spectra varies with temperature
    Temperature curves of SI and FPI cascaded interference spectra with different panda fiber lengths
    Spectrograms of sensors sample
    • Table 1. Comparison of temperature sensor performance parameters based on vernier effect

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      Table 1. Comparison of temperature sensor performance parameters based on vernier effect

      Vernier effect

      Di

      /mm

      FSRSI

      /nm

      Mi1Mi2

      SSI

      /(nm·℃-1

      Sienvelope

      /(nm·℃-1

      ΔDi

      /mm

      Sensitivity/(nm·℃-1Ref.
      0th6577.3417.9929.521.9431.06-64-14.63319
      1st1 2153.9116.4728.171.9333.21-12815.3420
      2nd1 8192.6718.2530.571.9634.29-243168.921
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    Zixi LIN, Yuting LI, Yuqiang YANG, Yitong LI, Yuying ZHANG. Fiber optic temperature sensor based on enhanced harmonic vernier effect[J]. Optics and Precision Engineering, 2024, 32(15): 2344

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    Paper Information

    Category:

    Received: May. 15, 2024

    Accepted: --

    Published Online: Sep. 27, 2024

    The Author Email: YANG Yuqiang (yuqiangy110@sina. com), LI Yitong (liyitongfly@163.com)

    DOI:10.37188/OPE.20243215.2344

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