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Proceedings Paper

OLAS: optical logic array structures
Author(s): Robert Howard Jones; Marios G. Hadjinicolaou; G. Musgrave
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Paper Abstract

Logic Array Structures (LAS) represent a class of sub-systems used in VLSI design. The principal reasons for the deployment of this class in design are their regularity of structure, ease of automation and verification. In addition, the mapping of 2-level Boolean functions is relatively easy to implement. Such an array structure consists of an AND-array/OR-array combination which represents the sum of products of the required Boolean function. The principal inherent disadvantages are the limitations of switching speed and fabrication area. Such advantages would be obviated by the use of optical couplers (Fig. 1) and waveguides, in which speeds would be increased by at least three orders of magnitude. Also the trends in the fabrication of optical waveguides indicate that a substantial saving in area is possible. 2The orthogonal nature of both LAS and OLAS implies that these waveguides would exhibit low loss factors.3 , This paper presents the theory of OLAS together with possible implementations. Discussion of future implications are included.

Paper Details

Date Published: 1 March 1991
PDF: 8 pages
Proc. SPIE 1401, Optical Data Storage Technologies, (1 March 1991); doi: 10.1117/12.26136
Show Author Affiliations
Robert Howard Jones, Brunel Univ. (United Kingdom)
Marios G. Hadjinicolaou, Brunel Univ. (United Kingdom)
G. Musgrave, Brunel Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 1401:
Optical Data Storage Technologies
Soo-Jin Chua; John C. McCallum, Editor(s)

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