【摘要】 首先简要介绍了ＷＤＭ技术，之后讨论了ＷＤＭ环网和智能光网络，最后介绍了 ＷＤＭ技术在国内外的发展情况。更多还原

【Abstract】 in this paper, the author first gives a brief introduction of the WDM technology, then deliber- ates on the WDM Ring Network and the Intelligent Optical Network. In the concluding part, interna- tional development of the WDM technology is reviewed.更多还原