一种基于改进TOAD结构的全光分组信头提取方案  

A Novel Header Extraction for Optical Packet Switched Networks Using a Modified TOAD with Differential Modulation Scheme

作　　者：季伟[1] 张民[1] 叶培大[1] 

机构地区：[1]北京邮电大学光通信与光波技术教育部重点实验室,北京100876

出　　处：《激光与红外》2006年第4期298-301,共4页Laser & Infrared

基　　金：国家自然科学基金(No.60372100);高校博士科研基金(No.20030013004)资助

摘　　要：文中提出了一种基于改进的太赫非对称光解复用器(TOAD:Terahertz Optical Asym-metric Demultiplexer)结构和差分调制的方案,用以完成光分组交换网络中的全光分组级信头提取。分组包中信头与净荷的速率分别为2.5Gbit/s和40Gbit/s。经数值仿真得到系统对信头和净荷的开关比可达15dB以上。此外,还具体讨论了SOA-TOAD的系统参数对性能的影响,从而得到使其性能优化的系统参数。A novel serial scheme of header extraction for optical packet switched networks based on a modified Terahertz Optical Asymmetric Demuhiplexer （TOAD） with differential modulation scheme is proposed. Numerical analysis and simulation show that more than 15dB contrast ratio of the separated header at 2.5Gbit,/s to the suppressed payload at 40Gbit/s can be achieved. In addition, the SOA-TOAD parameters are discussed and designed to optimize the performance of the proposed scheme.

关 键 词：半导体光放大器 太赫非对称光解复用器 曼彻斯特编码 差分调制 

分 类 号：TN915.02[电子电信—通信与信息系统]