DEVELOPMENT OF AN OPTICAL PARALLEL LOGIC DEVICE AND A HALF-ADDER CIRCUIT FOR DIGITAL OPTICAL-PROCESSING

被引：52

作者：

ATHALE, RA

LEE, SH

机构：

来源：

OPTICAL ENGINEERING | 1979年 / 18卷 / 05期

关键词：

D O I：

10.1117/12.7972421

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An Optical Parallel Logic (OPAL) device which performs Boolean algebraic operations on two binary images has been developed. This device consists of a photoconductor and an electrooptic light modulating material appropriately arranged to bring about an interaction between the input signals. Two such OPAL devices have been interconnected to form a half-adder circuit (one of the essential components in the CPU of a futuristic digital optical processor). Operation of an 8 multiplied by 8 OPAL device containing CdS (photoconductor) and twisted nematic liquid crystal (electrooptic light modulating material) is reported. A contrast ratio of 20:1 was obtained. A circuit composed of two such devices is shown to perform addition of two 8 multiplied by 8 binary images generating SUM and CARRY images.

引用

页码：513 / 517

页数：5

共 19 条

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