Photoelectronic interconnection network for high-speed informati

Details Photoelectronic interconnection network for high-speed informati Photoelectronic interconnection network for high-speed informati

1991-02-19

1992-03-10

Howell, Janice A.

Optical: systems and elements

Optical computing without diffraction

364525, G06G 900, G02F 129

Patent

active

050953800

ABSTRACT:
In a photoelectronic interconnection device, N.times.N light emitting elements are arranged on a light emitting plane in a matrix pattern and N.times.N light sensing elements are arranged on a light receiving plane in a matrix pattern corresponding to the light emitting elements. A lens array of p.times.p optical lenses is provided, the lenses being disposed on a common optical plane located so that it is spaced from the light receiving plane at a distance q times greater than its distance to the light emitting plane, where N=pq, the lenses being spaced apart from each other at pitch (pq+1)a/(q+1), and a is a pitch between successive light emitting elements. According to other embodiments, the optical plane and the light receiving plane can be spaced apart a distance which is N/2 times greater than the distance between the light emitting plane and the optical plane, and those of the lenses located along two rows and two columns which intersect at the center of the lens array are spaced at pitch (N+6)a/(N+2), and other lenses are spaced part with a pitch 2a. Those of the lenses located along such two rows and two columns can also be spaced at pitch (3N-2)a/(N+2), and the other lenses are spaced at pitch 2(N-2)a/(N+2).

REFERENCES:
patent: 4917456 (1990-04-01), Johns et al.
patent: 4931959 (1990-06-01), Brenner et al.
A. A. Sawchuck et al., "Geometries for Optical Implementations of the Perfect Shuffle", SPIE, vol. 963, Optical Computing 88, 1988, pp. 270-282.

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