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In this paper, we propose and demonstrate a network analysis Rayleigh scattering configuration for high resolution, distributed temperature measurements. In the proposed approach, a vector network analyzer (VNA) is employed to modulate the laser light adopting either a single-sideband (SSB), or a double sideband (DSB) modulation scheme, before being injected into the sensing fiber. The temperature changes are recovered by acquiring the Rayleigh spectral signature over a range of laser frequencies, and then determining the shift in the Rayleigh-scatter spectra induced by temperature at each fiber position.

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Distributed Temperature Measurements Using Network Analysis Frequency-Domain Reflectometry

  • 会议论文

  • 发表日期：

    2025年

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  • Rizwan Zahoor,
  • Raffaele Vallifuoco,
  • Ester Catalano,
  • Luigi Zeni,
  • Aldo Minardo

摘要

In this paper, we propose and demonstrate a network analysis Rayleigh scattering configuration for high resolution, distributed temperature measurements. In the proposed approach, a vector network analyzer (VNA) is employed to modulate the laser light adopting either a single-sideband (SSB), or a double sideband (DSB) modulation scheme, before being injected into the sensing fiber. The temperature changes are recovered by acquiring the Rayleigh spectral signature over a range of laser frequencies, and then determining the shift in the Rayleigh-scatter spectra induced by temperature at each fiber position.