基于背向瑞利散射的少模光纤模式耦合测量

发布时间：2018-05-24 18:09

本文选题：光通信 + 模分复用　；参考：《中国激光》2017年08期

【摘要】：少模光纤的模式耦合引起模分复用(MDM)系统传输性能劣化,是造成MDM技术难以在实际中大规模应用的主要因素之一。精确测量少模光纤模式耦合系数和量化分析模式耦合与系统性能之间的关系,可以为系统的损伤补偿提供可靠依据。分析了当前少模光纤模式耦合测量方法的利弊,并基于背向瑞利散射原理建立了一种模式转换器/解复用器和光纤环形器结构的少模光纤模式耦合测量系统,通过与多输入多输出功率分析的测量结果进行对比,验证了所提系统的测量性能。实验结果表明,所提系统较好地实现了对9.8km少模光纤模式耦合分布的测量,且测量结果稳定。
[Abstract]:The mode coupling of low-mode fiber leads to the deterioration of transmission performance of MDM system, which is one of the main factors that make it difficult for MDM technology to be applied on a large scale in practice. The accurate measurement of the mode coupling coefficient and the quantitative analysis of the relationship between the mode coupling and the system performance can provide a reliable basis for the damage compensation of the system. In this paper, the advantages and disadvantages of the current mode coupling measurement methods of low mode fiber are analyzed, and a mode converter / demultiplexer and an optical fiber ring structure are established based on the backscatter principle. The measurement performance of the proposed system is verified by comparison with the measurement results of multi-input and multi-output power analysis. The experimental results show that the proposed system can well measure the mode coupling distribution of 9.8km optical fiber, and the measurement results are stable.
【作者单位】：吉林大学通信工程学院;
【基金】：国家自然科学基金(61575078,61177066) 吉林省科技发展计划(20140203009GX) 吉林省发改委产业技术研究专项(2014Y087)
【分类号】：TN253;TN929.1

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