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Proceedings Paper

Four-operand parallel optical logic gates using shadow casting
Author(s): R. S. Fyath; S. A. Ali; M. S. Alam
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Paper Abstract

Optical shadow-casting (OSC) technique is seriously being considered as an efficient method that is capable of optically implementing two-operand parallel logic gates and array logic systems. The sixteen logic functions for two binary patterns (variables) are optically realizable in parallel by properly configuring an array of 2×2 light emitting diodes. In this paper, we propose an enhanced OSC technique for implementing four-operand parallel logic gates. The proposed system is capable of performing 216 logic functions by simply programming the switching mode of an array of 4×4 light emitting diodes in the input plane. This leads to an efficient and compact realization scheme when compared to the conventional two-operand OSC system.

Paper Details

Date Published: 23 October 2003
PDF: 12 pages
Proc. SPIE 5202, Optical Information Systems, (23 October 2003); doi: 10.1117/12.503886
Show Author Affiliations
R. S. Fyath, Univ. of Basrah (Iraq)
S. A. Ali, Univ. of Basrah (Iraq)
M. S. Alam, Univ. of South Alabama (United States)

Published in SPIE Proceedings Vol. 5202:
Optical Information Systems
Bahram Javidi; Demetri Psaltis, Editor(s)

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