Abstract This paper describes our recently proposed novel distributed vibration sensing (DVS) measurement technologies for visualizing the state of optical fiber in communication cables. Conventional fault location of optical fiber cable involves the measurement of just optical loss. However, in recent years, attempts have been made to visualize optical fiber attributes that cannot be observed with conventional technology; a key technique is measuring the distribution of dynamic strain caused by vibration. Accurately capturing the vibration makes it possible to measure the state of various fibers that cannot be realized with conventional loss measurements. In measuring vibration, it is necessary to measure not only the power of the light but also several physical parameters such as the vibrational frequency, which is the time variation of the waveform of scattered light, and the phase of the light itself. In addition, it is also necessary to consider the conventional specifications of optical loss measurement techniques, such as distance resolution and measurement distance, which have been considered in the past. In this paper, we introduce several DVS technologies and show their applicability to various state detection schemes for communication fibers.

中文翻译：

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用于光通信光纤状态可视化的分布式振动传感研究进展

摘要 本文介绍了我们最近提出的用于可视化通信电缆中光纤状态的新型分布式振动传感 (DVS) 测量技术。传统的光缆故障定位只涉及光损耗的测量。然而，近年来，人们尝试将传统技术无法观察到的光纤属性可视化。一项关键技术是测量由振动引起的动态应变的分布。准确捕捉振动可以测量传统损耗测量无法实现的各种光纤的状态。在测量振动时，不仅要测量光的功率，还要测量振动频率、这是散射光波形的时间变化和光本身的相位。此外，还需要考虑光损耗测量技术的常规规格，例如距离分辨率和测量距离，这些都是过去已经考虑过的。在本文中，我们介绍了几种 DVS 技术，并展示了它们在各种通信光纤状态检测方案中的适用性。