Liu Bo, Yu Zhihao, Hill Cary, Cheng Yujie, Homa Daniel, Pickrell Gary, Wang Anbo
Opt Lett. 2016 Sep 15;41(18):4405-8. doi: 10.1364/OL.41.004405.
We present, for the first time to our knowledge, a sapphire-fiber-based distributed high-temperature sensing system based on a Raman distributed sensing technique. High peak power laser pulses at 532 nm were coupled into the sapphire fiber to generate the Raman signal. The returned Raman Stokes and anti-Stokes signals were measured in the time domain to determine the temperature distribution along the fiber. The sensor was demonstrated from room temperature up to 1200°C in which the average standard deviation is about 3.7°C and a spatial resolution of about 14 cm was achieved.
据我们所知，我们首次展示了一种基于拉曼分布式传感技术的蓝宝石光纤分布式高温传感系统。532nm的高峰值功率激光脉冲被耦合到蓝宝石光纤中以产生拉曼信号。在时域中测量返回的拉曼斯托克斯和反斯托克斯信号，以确定沿光纤的温度分布。该传感器在室温至1200°C的温度范围内得到了验证，其平均标准偏差约为3.7°C，空间分辨率约为14cm。
