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电网技术  2006 

基于模间干涉的全光纤电压传感器设计

, PP. 50-55

Keywords: 模间干涉,全光纤电压传感器,群折射率,光程差,相位跟踪,灵敏度

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Abstract:

介绍了一种新型的光纤电压传感器结构和工作原理,分析了系统中椭圆芯双模光纤的传输模式和模间相干光斑的变化,采用熔接的方式进行相干光接收来获得正交相位漂移信号,根据模间群折射率差与光程差的关系设计调整光纤的长度,依据石英晶体和空气的绝缘强度进行传感光纤匝数设计,讨论了含源零差探测法的相位跟踪原理,给出了相位检测框架图及实验结果,分析表明该设计方案能达到相位跟踪的目的。

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