提出了一种损耗型矢量布里渊光时域分析光纤传感技术,通过构建基于外差检测的模拟实验系统测量受激布里渊散射幅度损耗谱和相移谱,实现了50m传感光纤的温度测量。结果表明,通过测量相移谱获得的布里渊频移与通过测量幅度损耗谱获得的布里渊频移基本一致,且均与温度呈良好的线性关系;由损耗型矢量布里渊光时域分析技术获得的布里渊频移的温度系数为1.16 MHz/℃,与传统布里渊光时域分析技术获得的1.2 MHz/℃具有良好的一致性。根据理论和实验结果,分析了损耗型矢量布里渊光时域分析光纤传感技术的优势。 A lossy vector Brillouin optical time-domain optical fiber sensing technique is proposed. By measuring the amplitude loss spectrum and the phase shift spectrum of stimulated Brillouin scattering, a 50m sensing fiber The temperature measurement. The results show that the Brillouin frequency shift obtained by measuring the phase shift spectrum is basically consistent with the Brillouin frequency shift obtained by measuring the amplitude loss spectrum, and both have a good linear relationship with the temperature. When the loss vector Brillouin light The temperature coefficient of Brillouin frequency shift obtained by domain analysis technique is 1.16 MHz / ° C, which is in good agreement with 1.2 MHz / ° C obtained by traditional Brillouin optical time domain analysis. According to the theoretical and experimental results, the advantages of lossy vector Brillouin optical time-domain optical fiber sensing technology are analyzed.