一种基于OCDMA技术的环型光接入方案  

An Accessing Scheme of Ring Network Based on OCDMA Technology

作　　者：尹树华[1] 徐晓[1] 李文元[1] 张中荃[1] 

机构地区：[1]西安通信学院,陕西西安710065

出　　处：《半导体光电》2008年第3期395-398,共4页Semiconductor Optoelectronics

摘　　要：分析了时分多址无源光网络(TDMA-PON)技术缺陷,提出了采用光码分多址(OCDMA)技术构建新型无源光接入系统的方案。通过选择网络节点结构构建环型光码分多址无源光网络(OCDMA-PON),并且结合仿真结果分析了网络传输性能。分析表明:将光码分多址技术的固有安全性和环型网络的拓扑安全性有机结合能有效解决传统光接入网存在的可靠性问题。The technologic defects of TDMA-PON are analyzed, and a new-style scheme of passive optical access system based on the technology of OCDMA（optical code division multiple access） is proposed. The OCDMA-PON was constructed through selecting the network-node structure, and the transmissive performance of this network is analyzed according to the result of emulation. Analyses result shows that combining the inherent security of OCDMA technology and topologic security of loop network can solve the reliability problem in traditional optical access networks.

关 键 词：光码分多址 环型拓扑 无源光网络 光耦合器 

分 类 号：TN929.11[电子电信—通信与信息系统]