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阐述了基于布里渊散射分布式的光纤传感技术的传感机理,简要介绍了基于脉冲技术的布里渊分布式传感技术(BOTDR,BOTDA)的基本原理及应用进展,并分析指出了其在空间分辨率等方面存在的问题。详细介绍了国内外学者在解决这些问题上提出的新的理论和实验研究方法(基于相关连续波的布里渊传感技术,基于相干探测-泵浦技术的布里渊传感技术以及自发布里渊散射和拉曼放大效应结合的布里渊传感技术)以及取得的进展。并对这些最新方案及其概况进行了评述,指出了仍然存在的问题并预测了未来的发展方向。
The sensing mechanism based on Brillouin scattering distributed optical fiber sensing technology is described. The basic principle and application of Brillouin distributed sensing technology (BOTDA) based on pulse technique are briefly introduced. Its problems in spatial resolution and other aspects. This paper introduces in detail the new theoretical and experimental research methods proposed by domestic and foreign scholars in solving these problems (Brillouin-based sensor technology based on continuous wave, Brillouin sensor technology based on coherent probe-pump technology and self-release Brillouin sensing technology combined with the Brillouin scattering and Raman amplification effects) and the progress made. And reviewed these latest programs and their profiles, pointed out the remaining problems and predicted the future direction of development.