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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 8 — Mar. 10, 2002
  • pp: 1556–1564

Signed-negabinary-arithmetic-based optical computing by use of a single liquid-crystal-display panel

Asit K. Datta and Soumika Munshi  »View Author Affiliations


Applied Optics, Vol. 41, Issue 8, pp. 1556-1564 (2002)
http://dx.doi.org/10.1364/AO.41.001556


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Abstract

Based on the negabinary number representation, parallel one-step arithmetic operations (that is, addition and subtraction), logical operations, and matrix-vector multiplication on data have been optically implemented, by use of a two-dimensional spatial-encoding technique. For addition and subtraction, one of the operands in decimal form is converted into the unsigned negabinary form, whereas the other decimal number is represented in the signed negabinary form. The result of operation is obtained in the mixed negabinary form and is converted back into decimal. Matrix-vector multiplication for unsigned negabinary numbers is achieved through the convolution technique. Both of the operands for logical operation are converted to their signed negabinary forms. All operations are implemented by use of a unique optical architecture. The use of a single liquid-crystal-display panel to spatially encode the input data, operational kernels, and decoding masks have simplified the architecture as well as reduced the cost and complexity.

© 2002 Optical Society of America

OCIS Codes
(200.1130) Optics in computing : Algebraic optical processing
(200.4560) Optics in computing : Optical data processing
(200.4660) Optics in computing : Optical logic
(200.4860) Optics in computing : Optical vector-matrix systems

History
Original Manuscript: April 20, 2001
Revised Manuscript: November 26, 2001
Published: March 10, 2002

Citation
Asit K. Datta and Soumika Munshi, "Signed-negabinary-arithmetic-based optical computing by use of a single liquid-crystal-display panel," Appl. Opt. 41, 1556-1564 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-8-1556

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