基于波长选择开关的OCDMA编解码系统实验研究  

Experimental Research of OCDMA System Using Wavelength Selective Switch

作　　者：武为江[1] 蒲涛[1] 朱华涛[1] 方涛[1] 郑吉林[1] 苏国瑞[1] 

机构地区：[1]中国人民解放军理工大学通信工程学院,江苏南京210007

出　　处：《中国激光》2016年第1期116-121,共6页Chinese Journal of Lasers

摘　　要：提出了一种基于波长选择开关(WSS)和光纤时延线结构的动态可重构、高码片速率的二维跳频-扩时(WH/TS)编解码器实现方案,阐述了其工作原理并进行了系统实验验证与仿真研究。设计实现了数据速率为2.5 Gbit/s的光码多分址(OCDMA)实验系统,完成了40 km的传输实验,并实际测得编码器的群时延和插损特性,利用VPI软件仿真验证了编解码器的码片速率可达500 GChip/s。实验结果表明:基于WSS和光纤时延线的编解码器不仅能够正确完成脉冲信号的编码和解码,而且传输系统实验的误码率(BER)优于1.00×10-9。A novel structural en/decoder using wavelength selective switch and optical delay line is proposed to reconfigure and achieve high chip rate in two-dimensional wavelength-hopping/time-spreading （2-D WH/TS） optical codedivision multiple access （OCDMA） system. This study expounds the operation principle, presents experimental results from a network tested with user operating at 2.5 Gbit/s, and realizes the experiment of 40 km transmission. Features of group delay and insertion loss about en/decoder are measured and performance of 500 GChip/s rate en/decoder is reached with VPI simulation software. The experimenal results demonstrate that the novel method can recover the waveform, and moreover, the bit error rate of the system can be less than 1.00 × 10-9.

关 键 词：光通信 光学码分多址 跳频-扩时 编解码器 

分 类 号：TN929.11[电子电信—通信与信息系统]