Infrared and Laser Engineering, Volume. 54, Issue 4, 20240582(2025)

Research on strong autocorrelation pulse coding technique for long-distance Raman distributed optical fiber sensing (invited)

Fan ZHANG1, Jian LI1,2、*, Lulei LI1, Kangyi CAO1, Xiaohui XUE2、*, and Mingjiang ZHANG1,2
Author Affiliations
  • 1College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China
  • 2Key Laboratory of Advanced Transducers and Intelligent Control Systems (Ministry of Education and Shanxi Province), Taiyuan University of Technology, Taiyuan 030024, China
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    Figures & Tables(7)
    Experimental setup of SAC-codes RDTS system
    The detection pulse and attenuation envelope collected during the numerical modeling simulation
    SNR based on single pulse, SAC-codes and Golay-codes
    Temperature demodulation curve based on single pulse and SAC-codes
    Temperature resolution based on single pulse and SAC-codes
    Spatial resolution based on SAC-codes
    • Table 1. Parameters related to SAC-codes numerical modeling simulation

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      Table 1. Parameters related to SAC-codes numerical modeling simulation

      ParameterPhysical meaningValue
      KaRaman anti-Stokes signal coefficient3.06641×10−9
      α0as/dB·km-1Transmission loss1.18
      nRefractive index of the fiber1.5
      p/nsPulse width10
      l/bitLength of codes64
      λ/nmRaman anti-Stokes signal wavelength1450
      Δv/THzRaman frequency shift13.2
      T0/℃Room temperature20
      T/℃FUT temperature80
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    Fan ZHANG, Jian LI, Lulei LI, Kangyi CAO, Xiaohui XUE, Mingjiang ZHANG. Research on strong autocorrelation pulse coding technique for long-distance Raman distributed optical fiber sensing (invited)[J]. Infrared and Laser Engineering, 2025, 54(4): 20240582

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    Paper Information

    Category: Invited research article

    Received: Dec. 22, 2024

    Accepted: --

    Published Online: May. 16, 2025

    The Author Email: Jian LI (lijian02@tyut.edu.cn), Xiaohui XUE (xuexiaohui@tyut.edu.cn)

    DOI:10.3788/IRLA20240582

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