<title>Optical Logic Gates Using A Hughes Liquid Crystal Light Valve</title>

Abstract

In this paper we propose new methods of optically implementing digital logic gates capable of performing all combinatorial logic operations. These logic gates are implemented on a Hughes liquid crystal light valve operated in the parallel off -state.Several configurations for realization of optical gates such as AND, NOR, XOR, etc. will be considered. Experimental results will be given using the portions of a single liquid crystal light valve. IntroductionIn this paper we present new methods of optically implementing digital logic gates capable of performing various combinatorial logic operations. These logic gates are implemented on a Hughes liquid crystal light valve (LCLV) of the same type used for making the flip -flops . Several configurations for realization of optical gates such as NOR, AND, XOR, etc. will be considered. The gates have the capability of oprating on large arrays of binary variables. Experimental results demonstrating the feasibility will be given using portions of a single LCLV.