论文标题
高速高分辨率光学相关域反射仪，无需使用电谱分析仪
High-speed high-resolution optical correlation-domain reflectometry without using electrical spectrum analyzer
论文作者
论文摘要
我们提出了一个新配置的光学相关域反射仪（OCDR），而无需使用电谱分析仪（ESA）进行高速分布式反射率测量，并具有增强的空间分辨率。首先，通过数值模拟分析了无ESA OCDR的操作，其结果表明，通过改进的空间分辨率，配置进行分布式反射率测量的潜力。随后，通过比较实验验证了模拟结果，其中使用常规（平均）和无ESA OCDR构型（不平均）以100 Hz的重复率使用常规（平均）和无ESA OCDR构型（带平均）进行分布式的反射率测量，并使用常规（平均）和无ESA OCDR构型进行多个连接器。通过常规和无ESA OCDR构型实验获得的反射率峰的宽度分别为22.9 cm和7.0 cm。最后，我们以较高的重复率以实验性评估了无ESA OCDR的性能，以1 kHz的重复速率实现了6.3 cm的空间分辨率。该结果表明，无ESA的OCDR可以以更高的操作速度进行分布式反射率测量，并比以往任何时候都更高的空间分辨率。
We propose a newly configured optical correlation-domain reflectometry (OCDR) without the use of an electrical spectrum analyzer (ESA) for high-speed distributed reflectivity measurement with an enhanced spatial resolution. First, the operation of ESA-free OCDR is analyzed by numerical simulation, the results of which show the potential of the configuration to perform distributed reflectivity measurement with an improved spatial resolution. Subsequently, the simulation results are verified by comparison experiments, where distributed reflectivity measurements along a 32-m-long single-mode fiber joint with multiple connectors are performed using both conventional (with averaging) and ESA-free OCDR configurations (without averaging) at a repetition rate of 100 Hz. The widths of the reflectivity peaks experimentally obtained by the conventional and ESA-free OCDR configurations are 22.9 cm and 7.0 cm, respectively. Finally, we experimentally evaluated the performance of the ESA-free OCDR at higher repetition rates, achieving 6.3-cm spatial resolution at a repetition rate of 1 kHz. This result indicates that the ESA-free OCDR can perform a distributed reflectivity measurement with an improved spatial resolution at a higher operation speed than ever.
