Optical Logic Gates Using Ferroelectric Liquid Crystals

Laura A. Pagano-Stauffer; Kristina M. Johnson; Noel Clark; Mark Handschy

doi:10.1117/12.936484

19 December 1986 Optical Logic Gates Using Ferroelectric Liquid Crystals

Laura A. Pagano-Stauffer, Kristina M. Johnson, Noel Clark, Mark Handschy

Proceedings Volume 0684, Liquid Crystals and Spatial Light Modulator Materials; (1986) https://doi.org/10.1117/12.936484
Event: 30th Annual Technical Symposium, 1986, San Diego, United States

Abstract

Ferroelectric liquid crystal (FLC) compounds are investigated for use in optical parallel processing. Spatial light modulators using the smectic C phase FLC's show better contrast ratio, faster switching speeds, and lower cost than twisted nematic liquid crystal spatial light modulators. In this paper we present measurements of characteristic parameters of FLC's, and demonstrate a new optical logic gate capable of performing fourteen Boolean logic operations using single cell FLC devices with photographic masks as inputs. The XOR and XNOR Boolean functions can be achieved by cascading together several optical logic gates. Recent results using 32 x 32 FLC matrix arrays demonstrate an OR gate which has programmable inputs.

Citation Download Citation

Laura A. Pagano-Stauffer, Kristina M. Johnson, Noel Clark, and Mark Handschy "Optical Logic Gates Using Ferroelectric Liquid Crystals", Proc. SPIE 0684, Liquid Crystals and Spatial Light Modulator Materials, (19 December 1986); https://doi.org/10.1117/12.936484

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