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 Asymmetric 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.