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介绍了波分复用 ( WDM)的特点和关键技术及密集波分复用系统 ( DWDM)的发展 ,并论述了 WDM技术在郑州电业局通信网扩容中应用几个问题的考虑
This paper introduces the characteristics and key technologies of wavelength division multiplexing (WDM) and the development of Dense Wavelength Division Multiplexing (DWDM) systems, and discusses the application of WDM technology in the expansion of communication network in Zhengzhou Electric Power Bureau