A multiparameter Brillouin fiber-optic sensor for distributed strain and temperature information measuring based on spontaneous scattering in a common communication optical fiber (the G. 652. D commercial fiber) is presented and experimentally demonstrated. Benefiting from the difference of the temperature and strain sensitivity from different Brillouin peaks with different acoustic modes, our proposed sensing configuration can be used to distinguish ambient temperature and applied strain at the same time, which is an excellent candidate to address the problem of cross-sensitivity in the classical Brillouin system. In the experimental section, using a 21.8 km sensing length of communication optical fiber, a temperature accuracy of 1.13°C and a strain accuracy of 21.46 με are obtained simultaneously. Considering the performance we achieved now, the proposed innovation and experimental setup will have some potential applications in the field of fiber sensors.

中文翻译：

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使用普通通信光纤通过布里渊频移同时测量分布温度和应变

提出并实验证明了一种多参数布里渊光纤传感器，该传感器用于基于普通通信光纤（G.652.D商业光纤）中的自发散射来测量分布式应变和温度信息。受益于具有不同声学模式的不同布里渊峰在温度和应变敏感性方面的差异，我们提出的传感配置可用于同时区分环境温度和施加的应变，这是解决交叉问题的极佳候选者经典布里渊系统的灵敏度。在实验部分中，使用通信光纤，1.13℃的温度精度和21.46的菌株精度的21.8公里感测长度 με同时获得。考虑到我们现在所获得的性能，建议的创新和实验设置将在光纤传感器领域中具有一些潜在的应用。