Proposal of Brillouin optical correlation-domain reflectometry (BOCDR)
Proposal of Brillouin optical correlation-domain reflectometry (BOCDR)
复制标题
DOI：
10.1364/oe.16.012148
复制
发表时间：
2008-08-04
期刊：
影响因子：
3.8
通讯作者：
Hotate, Kazuo
中科院分区：
文献类型：
--
作者：
Mizuno, Yosuke;Zou, Weiwen;Hotate, Kazuo
我们提出了一种布里渊光学相关域反射仪(BOCDR)，它通过检测自发布里渊散射并控制连续光波的干涉，可以从单端测量光纤上的应变和/或温度分布。在基于脉冲的传统布里渊光时域反射仪(BOTDR)中，原理上很难达到低于1m的空间分辨率，并且测量时间长达5-10分钟。相反，基于连续波的BOCDR可以超过1米分辨率的限制，实现更快的测量和对测量位置的随机访问。当采样频率为50赫兹时，空间分辨率为40厘米。(C)2008年美国光学学会。
We propose a Brillouin optical correlation-domain reflectometry (BOCDR), which can measure the distribution of strain and/or temperature along an optical fiber from a single end, by detecting spontaneous Brillouin scattering with controlling the interference of continuous lightwaves. In a pulse-based conventional Brillouin optical time-domain reflectometry (BOTDR), it is difficult in principle to achieve a spatial resolution less than 1 m, and the measurement time is as long as 5-10 minutes. On the contrary, the continuous-wave-based BOCDR can exceed the limit of 1-m resolution, and realize much faster measurement and random access to measuring positions. Spatial resolution of 40 cm was experimentally demonstrated with sampling rate of 50 Hz. (C) 2008 Optical Society of America.