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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 20, Iss. 13 — Jul. 1, 1981
  • pp: 2250–2256

Optical logic gates using liquid crystal light valve: implementation and application example

M. T. Fatehi, K. C. Wasmundt, and S. A. Collins, Jr.  »View Author Affiliations


Applied Optics, Vol. 20, Issue 13, pp. 2250-2256 (1981)
http://dx.doi.org/10.1364/AO.20.002250


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Abstract

In this paper, we propose a new method of optically implementing digital logic gates capable of performing all logic operations and give the technique for construction of an array of n-bit parallel adders as a typical application circuit. These gates are implemented using a Hughes liquid crystal light valve operated in the parallel off-state configuration. It is found that all possible functions of two binary variables are realizable with these gates, some as bright-true-logic and some as dark-true-logic. Experimental results will be given using the portions of a single liquid crystal light valve demonstrating the feasibility of AND, NOR, XOR, etc. gate arrays. As an example of implementation of combinatorial circuits, a design for an array of binary adders will also be given.

© 1981 Optical Society of America

History
Original Manuscript: January 20, 1981
Published: July 1, 1981

Citation
M. T. Fatehi, K. C. Wasmundt, and S. A. Collins, "Optical logic gates using liquid crystal light valve: implementation and application example," Appl. Opt. 20, 2250-2256 (1981)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-20-13-2250


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References

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