Bundesanstalt für Materialforschung und -prüfung, Unter den Eichen 44-46, 12203 Berlin, Germany.
Sensors (Basel). 2018 May 17;18(5):1600. doi: 10.3390/s18051600.
We demonstrate (and are the first to do so) 63 km Brillouin Optical Frequency-Domain Analysis (BOFDA) for temperature and strain monitoring using a 100 km fiber loop. The use of BOFDA for long-range applications can be considered a novel approach, as previous investigations focused on the utilization of Brillouin Optical Time-Domain Reflectometry and Analysis (BOTDR and BOTDA, respectively). At 51.7 km, a 100 m hotspot (37 ∘ C) was detected without using distributed Raman amplification or image processing.
我们展示了(也是首次)使用 100 公里光纤环进行 63 公里的布里渊光频域分析(BOFDA),用于温度和应变监测。BOFDA 用于远程应用可以被认为是一种新的方法,因为以前的研究集中在布里渊光时域反射计和分析(BOTDR 和 BOTDA)的利用上。在 51.7 公里处,无需使用分布式拉曼放大或图像处理,就检测到了 100 米的热点(37°C)。