基于4F系统光学逻辑编码的实验

Optical logic coding based on 4F system

设计了用4F系统进行光学逻辑编码的方法.根据4F系统的工作原理,通过分析光栅衍射屏横向位移量与衍射光相位改变量之间的关系,约定两衍射级光强相加时为“1”,两衍射级光强相消时为“0”的光学逻辑编码规则.实验结果表明:输出信号线性好,符合编码要求.

A practical method of optical logic coding by 4F system is designed. Based on the principles of 4F system, the relation between the phase-shift △ψ±1 and the grating displacement Ax is es tablished. The optical logic coding rule is 1 for constructive interference and 0 for destructive interference. Experimental results indicate that the output signal exhibits good linearity and the design can fulfill the requirement of optical logic coding.