基于OTDR测量光缆事件与结果分析

Analysis of Optical Cable Event Measurement and Results Based on OTDR

摘要: 近年来随着信息技术的不断发展，通信技术正经历着深刻的变革，从网络升级、智能化应用等多方面呈现出显著的发展趋势，可见通信技术正朝着更加高效、智能、广泛覆盖的方向迈进。这对我们的光缆线路传输提出了更高的要求，光时域反射仪(OTDR)是光纤领域的关键测试工具，在光缆线路施工、维护和测量中是必不可少的测试设备，能够快速测量事件、准确判读分析事件、快速处理事件结果。本文主要从光时域反射仪(OTDR)的工作原理、基本参数设置，结合自己多年的实际工作经验，主要分析非反射事件、反射事件、增益、鬼影等测量事件的曲线特征，对测试结果进行分析判定，剖析事件产生原因，给出处理建议，为光缆线路维护人员的工作提供参考。

Abstract: In recent years, with the continuous development of information technology, communication technology is undergoing profound changes. It shows remarkable development trends across multiple aspects, including network upgrading and intelligent application, and is moving toward higher-efficiency, intelligent and wide-coverage directions. This sets higher requirements for optical cable transmission. Optical Time-Domain Reflectometer (OTDR) is a vital testing instrument in the fiber-optics field. Indispensable in the construction, maintenance and measurement of optical cable lines, it can rapidly measure events, accurately identify and analyze events, and rapidly process event results. Combined with practical working experience, this paper describes the working principle and basic parameter settings of OTDR, analyses curve characteristics of measured events including non-reflection events, reflections, gain events and ghost events, judges test results, explores root causes and proposes handling suggestions, so as to provide reference for optical-cable maintenance staff.