利用耦合模理论，分析了马赫-陈德尔(Mach-Zehnder)干涉型波分复用器的复用间隔，波长隔离度及输出功率等特性，讨论了它的温度稳定性，并对其波长调谐性进行了分析与实验。

Using coupling mode equations, the characteristics of Mach Zehnder Wavelength Division Multiplexer (WDM), such as wavelength multiplexing interval, isolation ratio and output power, are analysed. The temperature stabilization is discussed. The analysis and experiment of its wavelength tunability are presented.