干涉型光纤传感器的分集检测消偏振衰落技术的研究与改进  

The Development of Interferometric Fiber-optic Sensor's Divide/Combine Polarization-induced-fading Eliminated Technique

作　　者：周效东[1] 汤伟中[1] 

机构地区：[1]浙江大学信息与电子工程系

出　　处：《光通信技术》1996年第1期70-74,共5页Optical Communication Technology

摘　　要：本文对干涉型光纤传感器的分集检测消偏振衰落技术进行了新的理论分析，证明各路信号不能简单相加，提出了将各路信号平方后相加的信号处理方式，使之能实现实时信号检测。计算了这一信号处理方式与原文献假设的振幅绝对值相加时的信号幅度最大波动，证明这一方式是可行的，并得出结论三路检偏是分集检测的一个合适取值。This paper gives new theoretical analysis to the divide/combino polarization-induced-fading eliminated technique of the interferometric fiber-Optic sensor, which shows the divided signals can't be directly added. By squaring each signal and adding together, the paper proposed a new way to realize the real time detection of the divide/combine method. Calculating and comparing to the result of the amplitude sum assumed in the Qrginal peper, the way is proved to be suitable, at the same time the conclusion is drawn that three is the best number for the analysers.

关 键 词：光纤干涉仪 偏振衰落 分集检测 光纤元件 

分 类 号：TN253.06[电子电信—物理电子学]