论文标题
具有相关技术的单模式纤维的分布式感测
Distributed Sensing of Single Mode Fibers with Correlation Techniques
论文作者
论文摘要
在本文中，我们报告了基于相关的光学时域反射法（OTDR）的发展进度。用相干接收器将直接检测接收器替换，从而可以提取反射信号的相位和极化信息。此外，由于将弱探针信号与强局部振荡器混合在一起，因此接收器的灵敏度得到了改善。通过分析从角度的物理接触（APC）连接器的反射来证明了这一改进。为了进一步量化改进，我们将直接检测相关性OTDR（C-OTDR）与相干检测相关OTDR（CC-OTDR）相对于空间和振幅分辨率进行比较。
In this paper, we report on the development progress of correlation-based optical time domain reflectometry (OTDR). Substituting the direct detection receiver with a coherent receiver enables to extract the phase and polarization information of the reflected signal. Furthermore, due to the mixing of a weak probe signal with a strong local oscillator the sensitivity of the receiver improved. This improvement was demonstrated by analyzing the reflection from an angled physical contact (APC) connector. To further quantify the improvements, we compare the direct detection correlation OTDR (C-OTDR) with the coherent detection correlation OTDR (CC-OTDR) with respect to the spatial and amplitude resolution.
