摘要
运用θ调制和空间滤波原理,在8f系统中以光的二进制逻辑运算为基础,设计并实现了光的三进制逻辑运算.用不同取向的光栅对2个输入进行编码,通过2次空间滤波,分别筛选出2个输入的部分信息,这样在输出面上就可得到2个输入不同取向组合所对应的不同输出结果,从而实现光的逻辑运算和光学加密.利用Matlab对设计思路进行了计算机模拟,不仅能与实验相互验证,还能对实验上实现起来困难的部分加以模拟,得到了较理想的结果.
According to optical binary logic operations in the 8f system, optical ternary logic operations are designed and realized based on the principle of θ modulation and spatial filtering. Two inputs are encoded by the gratings of different directions, and by using the method of spatial filtering twice to screen out part of the information of the two inputs separately, different outputs can be gained according to the different combinations of grating directions on the two input planes, and thus optical ternary logic operations and optical encryption can be realized. All the experiments and designs presented in this paper are verified by using the computer simulation with Matlab, and satisfactory results have been gained.
出处
《物理实验》
2008年第3期1-5,8,共6页
Physics Experimentation
基金
国家基础科学人才培养基金(NoJ0630316)
关键词
θ调制
空间滤波
光计算
逻辑运算
光学加密
θ modulation
spatial filtering
optical computing
logic operation
optical encryption
