2.5Gbit/s二维OCDMA系统研究  

2.5 Gbit/s two-dimensional OCDMA system

作　　者：王可[1,2] 吉建华[1,2] 张志朋[2] 蒲涛[3] 方涛[3] 吴国峰[4] 王航[4] 李文浦[4] 

机构地区：[1]深圳市现代通信与信息处理重点实验室,深圳518060 [2]深圳大学信息工程学院,深圳518060 [3]中国人民解放军理工大学通信工程学院,南京210007 [4]中国电子科技集团公司第三十四研究所,广西桂林541004

出　　处：《深圳大学学报（理工版）》2012年第6期477-481,共5页Journal of Shenzhen University(Science and Engineering)

基　　金：国家自然科学基金资助项目(60772027)~~

摘　　要：报道一种新的二维光码分多址(optical code division multiple access,OCDMA)系统实验,在有干扰用户的情况下,实现了G.652单模光纤100 km传输,数据速率2.5 Gbit/s,误码率小于10-9的系统传输性能.系统采用自制的增益开关分布反馈激光器作为超短脉冲编码光源,研制基于分段采样啁啾光纤光栅的时频域二维光编/解码器;测试无干扰用户时的编码波形解码波形,以及有干扰用户时的编码波形和解码波形,获得较好的光编解码性能和抗干扰性能.结果表明,该系统传输性能好、抗干扰性强、安全可靠、结构简单且实用性强,为OCDMA系统在解决光信号安全传输、光码分多址扩容、光码分多址接入,及光码标记交换等全光通信、网络应用问题,提供了一个高效可行的实用化优选方案.A new two-dimensional optical code division multiple access（OCDMA） experiment system is presented in this paper. The data rate of 2.5 Gbit/s in 100 km G. 652 fiber is achieved while the bit error rate （BER） is less than 10 -9, even with interference user. The Gain-switched DFB laser is used as ultrashort pulse light source for encoding and decoding. A two-dimensional time-frequency domain codec is designed based on step-sampling chirp fiber grating. The encoding and decoding waveforms, with or without interfering user, are measured, and the desirable performance of encoding and decoding is obtained. This system has demonstrated its good performance in transmission, security, reliability, anti-interference and simple structure. It provides an optimal scheme forOCDMA system, which is able to ensure security in all-optical communication and network, capacity expansion, optical code multiple access and optical code label switching.

关 键 词：光纤通信 光码分多址 光纤光栅 增益开关DFB激光器 时频域二维光编 解码 基于分段采样啁啾光纤光栅光编 解码器 二维光码分多址系统 光信号安全传输 光码分多址扩容 光码分多址接入 光码标记交换 

分 类 号：TN913.7[电子电信—通信与信息系统] TN911.74[电子电信—信息与通信工程]