50 公里范围内具有 1 米空间分辨率的单编码 BOTDA 光纤传感器。
Simplex-coded BOTDA fiber sensor with 1 m spatial resolution over a 50 km range.
机构信息
EPFL Swiss Federal Institute of Technology, Institute of Electrical Engineering, Group for Fiber Optics,STI IEL GR-SCI Station 11, CH-1015 Lausanne, Switzerland.
出版信息
Opt Lett. 2010 Jan 15;35(2):259-61. doi: 10.1364/OL.35.000259.
In this Letter, we propose the use of optical pulse coding techniques for long-range distributed sensors based on Brillouin optical time-domain analysis (BOTDA). Compared to conventional BOTDA sensors, optical coding provides a significant sensing-range enhancement, allowing for temperature and strain measurements with 1 m spatial resolution over 50 km of standard single-mode fiber, with an accuracy of 2.2 degrees C/44 muepsilon, respectively.
在这封信中，我们提出了在基于布里渊光时域分析（BOTDA）的远程分布式传感器中使用光脉冲编码技术。与传统的 BOTDA 传感器相比，光编码提供了显著的传感范围增强，允许在 50 公里的标准单模光纤上以 1 米的空间分辨率进行温度和应变测量，其精度分别为 2.2°C/44 μεpsilon。
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