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A useful method for determination of optimal fiber input power in spontaneous Brillouin-scattering-based sensing system

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Abstract

A method for the optimal fiber input power determination is presented by employing the variation characteristics of signal to noise ratio (SNR) in spontaneous Brillouin-scattering-based sensing system. And a heterodyne detection system is constructed for measuring the Brillouin scattering spectra with different fiber input powers. The Brillouin spectrum width and system SNR can be simultaneously measured from these spectra, and the optimal fiber input power can be obtained from such information. In the experiment, for 48.8-km-long standard single-mode fiber (SSMF), the optimal fiber input power values are all approximately 0 dBm obtained by the maximum SNR position for different local oscillator power values and average times.

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Authors and Affiliations

  1. Department of Electronic and Communication Engineering, North China Electric Power University, Baoding, 071003, China

    Yong-qian Li  (李永倩), Xiao-juan Li  (李晓娟), Han-bai Fan  (范寒柏) & Li-xin Zhang  (张立欣)

  2. School of Information Technology, Hebei University of Economics and Business, Shijiazhuang, 050061, China

    Xiao-juan Li  (李晓娟)

Authors
  1. Yong-qian Li  (李永倩)
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  2. Xiao-juan Li  (李晓娟)
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  3. Han-bai Fan  (范寒柏)
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  4. Li-xin Zhang  (张立欣)
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Corresponding author

Correspondence to Xiao-juan Li  (李晓娟).

Additional information

This work has been supported by the National Natural Science Foundation of China (No.61377088), and the Natural Science Foundation of Hebei Province of China (Nos.E2015502053 and F2014502098).

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Li, Yq., Li, Xj., Fan, Hb. et al. A useful method for determination of optimal fiber input power in spontaneous Brillouin-scattering-based sensing system. Optoelectron. Lett. 14, 53–56 (2018). https://doi.org/10.1007/s11801-018-7216-9

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  • DOI: https://doi.org/10.1007/s11801-018-7216-9

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