摘要
光码分多址(OCDMA)技术具有全光处理,异步接入,高安全性等优势.无源光网络(PON)为接入网"最后一公里"瓶颈提供了最佳的解决方案.基于光码分复用的无源光网络(OCDMA-PON)充分发挥了OCDMA技术的特点及PON技术的优势,在未来光接入网中有很大的应用潜力.介绍了OCDMA-PON系统以及FBG编解码器的结构原理.在此基础上采用二维光正交码,设计了4个发送用户和1个接收用户的OCDMA-PON系统,进行了速率为2.5Gb/s的传输实验.结果表明在多用户随机接入的情况下,该系统能正确解码,性能良好.
Optical code division multiple access （OCDMA） offers all-optical processing, asynchronous access abili- ty, and high potential information security. Passive optical network （PON） provides a solution for last mile bottleneck in optical access network. OCDMA-PON integrates the advantages of OCDMA and technological features of PON. It has great potential in future application of optical access network. In this paper,the theory of OCDMA-PON system and the principle of FBG-hased en/decoder are introduced. A transmission experiment is designed with two-dimen- sional optical orthogonal code （2D-OOC）, consisting of four transmitters and one receiver, and the data transmission rate is 2.5 Gb/s. The experimental result shows that in the case of multi-user,the system realizes correct transmis- sion and reaches good performance.
出处
《南京信息工程大学学报（自然科学版）》
CAS
2012年第6期540-544,共5页
Journal of Nanjing University of Information Science & Technology（Natural Science Edition）
基金
国家自然科学基金(60977051)
广西高校自然科学基金(20101MS018)
