非相干光实现的二维复数离散傅里叶变换

Incoherent optical implementation of 2-D complex discrete Fourier transform

本文给出了用非相干光束来实现二维复数离散傅里叶交换的方法.建立了一个多成像光学系统.此系统充分利用了光的平行处理特性,二维数据可同时处理.光学上的复数表示可采用二种编码方法来实现.我们选取了N=6二维输入数据来验证上述方法,实验所获得的结果与计算机模拟相一致.

A method is given in this paper using incoherent light to realize 2-D complex discrete Fourier transform (DFT). A multi-imaging system is set up, which fully uses the inherent property of optical parallel processing, and 2-D input data can be processed simultanously. A complex can be optically expressed by two encoding methods. 2-D input data of N = 6 is chosen to verify the method. The experimental results accord with the simulant results of computer.