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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 5 — Feb. 10, 1998
  • pp: 889–911

Space-variant interconnections based on diffractive optical elements for neural networks: architectures and cross-talk reduction

Ching-Chu Huang, B. Keith Jenkins, and Charles B. Kuznia  »View Author Affiliations


Applied Optics, Vol. 37, Issue 5, pp. 889-911 (1998)
http://dx.doi.org/10.1364/AO.37.000889


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Abstract

Optical architectures for fully connected and limited-fan-out space-variant weighted interconnections based on diffractive optical elements for fixed-connection multilayer neural networks are investigated and compared in terms of propagation lengths, system volumes, connection densities, and interconnection cross talk. For a small overall system volume the limited-fan-out architecture can accommodate a much larger number of input and output nodes. However, the interconnection cross talk of the limited-fan-out space-variant architecture is relatively high owing to noise from the diffractive-optical-element reconstructions. Therefore a cross-talk reduction technique based on a modified design procedure for diffractive optical elements is proposed. It rearranges the reconstruction pattern of the diffractive optical elements such that less noise lands on each detector region. This technique is verified by the simulation of one layer of an interconnection system with 128 × 128 input nodes, 128 × 128 output nodes, and weighted connections that fan out from each input node to the nearest 5 × 5 array of output nodes. In addition to a significant cross-talk reduction, this technique can reduce the propagation length and system volume.

© 1998 Optical Society of America

OCIS Codes
(050.1970) Diffraction and gratings : Diffractive optics
(200.4650) Optics in computing : Optical interconnects
(200.4700) Optics in computing : Optical neural systems

History
Original Manuscript: April 28, 1997
Revised Manuscript: September 4, 1997
Published: February 10, 1998

Citation
Ching-Chu Huang, B. Keith Jenkins, and Charles B. Kuznia, "Space-variant interconnections based on diffractive optical elements for neural networks: architectures and cross-talk reduction," Appl. Opt. 37, 889-911 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-5-889

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