光码分多址技术在光接入网中的应用

The Application of Optical Code division Multiple access Technology in the Optical Access Network

无源光网络是光接入网的主要发展方向，ＦＴＴＨ 是ＰＯＮ 的最终方式，将ＯＣＤＭＡ，ＷＤＭ 等技术用于光接入网中，是实现接入网宽带化的途径之一。介绍了ＯＣＤＭＡ 的技术特点，分析了目前光接入网中多址技术的弊端，探讨了ＯＣＤＭＡ用于光接入网的可能性和优势，提出实现无源光网络多址接入的Ｗ ＤＭ／ＣＤＭＡ 方案。

The application of OCDMA and WDM in PON is a method of accessing wide band services. This paper introduces the characteristics of OCDMA, analyses the possibilities and advantages of applying the OCDMA in PON, and finally proposes the WDM/CDMA blueprint of passive optical access networks.