分数傅里叶变换光学实现的基本单元

The Banyan Network and Optical Implementation

提出一些实现分数傅里叶变换的新型的基本光学单元。这些基本单元仅使用一个透镜和一个菲涅耳衍射，给光学设计增加一些新的可选基本类型。对于给定焦距的透镜，它能完成的分数傅里叶变换是Ｌｏｈｍａｎｎ给出的单透镜结构无法实现的。

A structure of the optical banyan interconnection network using TN liquid crystal light modulations and polarized beam splitter are discussed. The structure has many advantages, such as directly transmission, no aligned error, no zooming, and can realize modularization and integration.