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Applied Optics

Applied 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)

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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

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

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)

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  1. W. P. Bleha et al., Opt. Eng. 17, 371 (1978).
  2. D. Casasent, “Coherent Light Valves,” in Applied Optics and Optical Engineering, R. Kingslake, B. J. Thompson, Eds. (Academic, New York, 1980). [CrossRef]
  3. U. K. Sengupta, U. H. Gerlack, S. A. Collins, Opt. Lett. 3, 199 (1978). [CrossRef] [PubMed]
  4. U. H. Gerlack, U. K. Sengupta, S. A. Collins, Opt. Eng. 19, 452 (1980).
  5. D. H. Shaefer, J. P. Strong, Proc. IEEE 65, 129 (1977). [CrossRef]
  6. C. C. Guest, T. K. Gaylord, Proc. Soc. Photo-Opt. Instrum. Eng. 185, 42 (1979).
  7. A. Huang, Proc. Soc. Photo-Opt. Instrum. Eng. 232, 119 (1980).
  8. K. Preston, Coherent Optical Computers (McGraw-Hill, New York, 1972).
  9. R. A. Athale, S. H. Lee, Opt. Eng. 18, 513 (1979). [CrossRef]
  10. B. H. Soffer et al., Proc. Soc. Photo-Opt. Instrum. Eng. 232, 128 (1980).
  11. M. Mano, Computer Logic Design (Prentice-Hall, Englewood Cliffs, N.J., 1972).
  12. H. Hacker, Y. Kwon, R. Lontz, I. Lefkowitz, Appl. Opt. 19, 1278 (1980). [CrossRef] [PubMed]
  13. H. Hacker, I. Lefkowitz, R. Lontz, Appl. Opt. 19, 3257 (1980). [CrossRef] [PubMed]
  14. N. A. Clark, S. T. Lagerwal, Appl. Phys. Lett. 36, 899 (1980). [CrossRef]

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