一种新型的Crossbar光交换

The Physical Implementations for Optical Orthogonal Codes

利用布拉格声光效应设计了一种自由空间电控光交换系统．该系统由声光偏转器、专用频率控制器、视角放大结构、变换透镜等组成，它能够实现无阻塞全排列Ｃｒｏｓｓｂａｒ光交换，并具有插入损耗低、串话低、交换速度快、结构简单、光能利用率高等特点．给出４×４Ｃｒｏｓｂａｒ光交换模拟实验，其结果验证了这个方案的可行性．

Some typical implementations of OOCs are introduced and analyzed in the angles of different encoding parameters.A new scheme based on gratings and masks is simply presented,which is being studied further now,and then its advantage /shortcoming are analysed.