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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and O. Gerstel
  • Vol. 4, Iss. 3 — Mar. 1, 2012
  • pp: 189–201

Photonic Interconnection Network Architectures Using Wavelength-Selective Spatial Routing for Chip-Scale Communications

Johnnie Chan and Keren Bergman  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 4, Issue 3, pp. 189-201 (2012)
http://dx.doi.org/10.1364/JOCN.4.000189


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Abstract

The overall performance of modern computing systems is increasingly determined by the characteristics of the interconnection network used to provide communication links between on-chip cores and off-chip memory. Photonic technology has been proposed as an alternative to traditional electronic interconnects because of its advantages in bandwidth density, latency, and power efficiency. Circuit-switched photonic interconnect topologies take advantage of the optical spectrum to create high-bandwidth transmission links through the transmission of data channels on multiple parallel wavelengths; however, this technique suffers from low path diversity and high setup time overhead, which induces high network resource contention, unfairness, and long latencies. This work improves upon the circuit-switching paradigm by introducing the use of on-chip wavelength-selective spatial routing to produce multiple logical communication layers on a single physical plane. This technique yields higher path diversity in photonic interconnection networks, demonstrating as much as 764% saturation bandwidth improvement with synthetic traffic and as much as 89% improvement in execution time and energy dissipation for traffic from scientific application traces.

© 2012 OSA

OCIS Codes
(200.0200) Optics in computing : Optics in computing
(200.4650) Optics in computing : Optical interconnects

ToC Category:
Research Papers

History
Original Manuscript: October 27, 2011
Revised Manuscript: January 17, 2012
Manuscript Accepted: January 20, 2012
Published: February 13, 2012

Citation
Johnnie Chan and Keren Bergman, "Photonic Interconnection Network Architectures Using Wavelength-Selective Spatial Routing for Chip-Scale Communications," J. Opt. Commun. Netw. 4, 189-201 (2012)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-4-3-189

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