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本文介绍了光纤复用系统（ＷＤＭ和ＦＤＭ）中的几种基于Ｆａｂｒｙ一Ｐｅｒｏｔ干涉仪（ＦＰＩ）原理的波长选择器件，并对其测量范围、测量精度等主要特点进行了简单的分析．
This paper introduces several wavelength selective devices based on Fabry-Perot interferometer (FPI) in fiber multiplexing systems (WDM and FDM), and briefly analyzes the main characteristics of their measurement range, measurement accuracy and so on.