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Brillouin optical time-domain analyzer with frequency shift keying probe

机译：具有频移键控探头的布里渊光学时域分析仪

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摘要

A Brillouin optical time-domain analysis (BOTDA) technique for enhancing the probe power to +5 dBm is proposed and demonstrated, which is based on a conventional dual sideband probe setup, but the probe waves are modulated by a frequency shift keying signal. The pump distortion is compensated in the time domain with this technique. By employing a 105-km sensing fiber, this technique is experimentally validated with 2-m spatial resolution. Furthermore, another experiment is designed to show the good tolerance for the sensing fibers combined with large Brillouin frequency shift (BFS) difference, as is demonstrated in a 50-km-long sensing fiber consisting of two segments with large BFS difference (200 MHz).
机译：提出并演示了一种基于布里渊光时域分析（BOTDA）技术，用于将探头功率提高到+5 dBm，该技术基于常规的双边带探头设置，但是探头波由频移键控信号调制。用这种技术可以在时域中补偿泵的失真。通过使用105公里的传感光纤，该技术已在2 m空间分辨率下进行了实验验证。此外，还设计了另一个实验，以证明对感测光纤具有良好的耐受性并结合了大的布里渊频移（BFS）差异，这在50公里长的感应光纤中得到了证明，该光纤由两个具有大的BFS差异的段组成（200 MHz） 。

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  • 来源
    《Optical engineering》 |2018年第6期|066103.1-066103.5|共5页
  • 作者

    Xiaobin Hong; Sheng Wang; Xizi Sun; Jian Wu; Yan Li;

  • 作者单位

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Beijing, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Beijing, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Beijing, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Beijing, China;

    Beijing University of Posts and Telecommunications, State Key Laboratory of Information Photonics and Optical Communications, Beijing, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    fiber optics sensors; stimulated Brillouin scattering; frequency shift keying;

    机译：光纤传感器;布里渊散射频移键控;

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