摘要
针对全混洗互连网络在光通信和光信息处理中的应用,提出一种利用二元光学方法制作的深浮雕微闪耀光栅列阵构建全混洗(Perfect Shuffle,PS)光互连网络的方法。该方法通过逆混洗(Inverse Perfect Shuffle,IPS)和左混洗(Left Perfect Shuffle,LPS)的串联,构成多级的可重排、无阻塞的Omega网络,采用二分图法(Bipartition Graph)依次确定各级节点开关的状态(直通或交叉),最后通过偏振分光棱镜(Polarizing Beam Splitter,PBS)、半波片(λ/2 wave plate)和PSPlate的组合,得到可重排、无阻塞的Omega网络交换模块。理论分析和实验结果表明该模块可以实现N=8输入信号按任意序列输出,不会发生路径冲突。该方法实现的全光交换和排序具有自由空间交换、交换透明、串扰小、带宽高的特点,在光通信以及信号处理中具有一定的应用。
Perfect Shuffle （PS） network plays an important role in optical communication and optical information processing. Based on its characteristics and applications, a new technology was proposed, which computer-generated blazed grating array could realize PS transformation including Inverse Perfect Shuffle （IPS） and Left Perfect Shuffle （LPS）. Then according to the cascade of IPS and LPS, the multi-stage rearrangeable nonblocking Omega network was introduced. Moreover, the method of bipartition graph was adopted to ascertain the node state of each stage （straight or crossover）. At last, a module of the rearrangeable nonblocking Omega network, which was integrated with polarizing beam-splitter, λ/2 wave plate and perfect shuffle Plates, was constructed. It has the advantages of switching transparent, low crosstalk, high bandwidth etc, and can accomplish the operation of sorting and permutation of 8-channel optical signals without routing conflict. The theoretical analysis and the experimental results show that this module will be implemented in free-space optical interconnection network.
出处
《光电工程》
EI
CAS
CSCD
北大核心
2007年第5期103-108,共6页
Opto-Electronic Engineering
基金
微光学列阵元件实现PS互连新方法研究(60178023)
关键词
二元光学
深浮雕微闪耀光栅
全混洗
二分图法
Binary optics
Computer-generated blazed grating array
Perfect shuffle
Bipartition graph
