Measurement range enlargement in Brillouin optical correlation-domain reflectometry based on double-modulation scheme
Measurement range enlargement in Brillouin optical correlation-domain reflectometry based on double-modulation scheme
复制标题
DOI：
10.1117/12.848688
复制
发表时间：
2009-10
期刊：
影响因子：
--
通讯作者：
Y. Mizuno;Zuyuan He;K. Hotate
中科院分区：
文献类型：
--
作者：
Y. Mizuno;Zuyuan He;K. Hotate
我们展示了一种双调制方案，以扩大布里渊光相关域反射法（BOCDR）用于光纤分布式应变传感的测量范围。在该方案中，激光输出的频率被同时调制为两个不同的频率。采用噪声本底补偿技术，在1.5 km的测量范围内获得了27 cm的分辨率。
We have demonstrated a double-modulation scheme to enlarge the measurement range of Brillouin optical correlationdomain reflectometry (BOCDR) for fiber-optic distributed strain sensing. In this scheme, the frequency of the laser output is simultaneously modulated with two different frequencies. A resolution of 27 cm was achieved with 1.5-km measurement range when a noise-floor compensation technique was used.