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Applied Optics

Applied Optics


  • Vol. 37, Iss. 14 — May. 10, 1998
  • pp: 2886–2894

Performance scaling comparison for free-space optical and electrical interconnection approaches

Michael W. Haney and Marc P. Christensen  »View Author Affiliations

Applied Optics, Vol. 37, Issue 14, pp. 2886-2894 (1998)

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Projected performance metrics of free-space optical and electrical interconnections are estimated and compared in terms of smart-pixel input–output bandwidth density and practical geometric packaging constraints. The results suggest that three-dimensional optical interconnects based on smart pixels provide the highest volume, latency, and power-consumption benefits for applications in which globally interconnected networks are required to implement links across many integrated-circuit chips. It is further shown that interconnection approaches based on macro-optical elements achieve better scaling than those based on micro-optical elements. The scaling limits of micro-optical-based architectures stem from the need for repeaters to overcome diffraction losses in multichip architectures with high bisection bandwidth. The overall results provide guidance in determining whether and how strongly a free-space optical interconnection approach can be applied to a given multiprocessor problem.

© 1998 Optical Society of America

OCIS Codes
(200.4650) Optics in computing : Optical interconnects

Original Manuscript: August 14, 1997
Revised Manuscript: November 10, 1997
Published: May 10, 1998

Michael W. Haney and Marc P. Christensen, "Performance scaling comparison for free-space optical and electrical interconnection approaches," Appl. Opt. 37, 2886-2894 (1998)

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