Performance improvement of optical reflectometry and tomography with synthesis of optical coherence function

本研究的目的是提高项目读取器原创技术“光学相干函数合成（SOCF）”的精度。该项目还研究了使用 SOCF 实现的各种光子功能系统。已经提出并试验了通过用户网络中的光纤在约 5 公里长距离诊断设备的反射测量系统。在5公里距离处实现了6厘米的空间分辨率。这一性能尚未被其他系统实现。通过应用 SOCF 还发明了测量沿光纤的力分布的光学系统。可以在 1km 测量范围内以 9m 分辨率测量高双折射光纤中由于施加力而产生的偏振模式耦合位置。还应用三角相干功能实现力的即时定位，并采用数字处理提高精度。这些系统可用于智能结构和安全系统。多路光纤干涉传感器已通过使用 SOCF 技术进行了演示。光学断层扫描系统也已被发明，无需数据计算，可以简化机械扫描方案。还构建了一个没有任何机械运动部件的系统。还实现了一种用于诊断具有多个内表面的光学介质中的每个表面轮廓的系统。还发明了一种用于测量沿光纤的应力分布的光纤系统，其中利用光纤中布里渊散射的频移来测量应力。通过使用具有厘米级空间分辨率的 SOCF 技术来定位受激布里渊散射。在实验中，已经证明了6.5cm的分辨率。相反，传统时域技术的空间分辨率限制仅为1m。我们相信本项目已经积累了足够的研究成果。较少的

The purpose of this research is to improve the accuracy of "Synthesis of Optical Coherence Function (SOCF)", that is the original technology of the project reader. Various photonic functional systems, which are realized by using the SOCF, are also investigated in this project.Reflectometry systems for diagnosing devices at a long distance of about 5km through optical fibers in subscriber networks have been proposed and experimented. Spatial resolution of 6cm has been achieved at 5km distance. This performance ha not yet been realized by other systems. Optical systems to measure force distribution along a fiber have also been invented by applying the SOCF. Positions of polarization mode coupling in a high birefringent fiber due to the applied force can be measured with 9m resolution through 1km measurement range. Triangle shaped coherence function has also been applied to realize immediate positioning of the force, and digital processing has also been used to improve the accuracy. These … More systems can be used for smart structures and security systems. Multiplexed fiber optic interferometric sensors have demonstrated by using SOCF technology. Optical tomography system has also been invented, in which we need no data calculation and can simplify the mechanical scanning scheme. A system without any mechanical moving parts has also been constructed. A system for diagnosing each surface profile in optical media with multiple inner surfaces has also been realized. A fiber optic system for measuring stress distribution along a fiber has also been invented, in which frequency shift of Brillouin scattering in the fiber is used to measure the stress. Stimulated Brillouin scattering is localized by using SOCF technique with cm order spatial resolution. In the experiment, 6.5cm resolution has been demonstrated. On the contrary, spatial resolution limitation in traditional time domain technologies is only 1m.We believe that enough research results have been accumulated in this project. Less