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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 8 — Apr. 13, 2009
  • pp: 6550–6561

Low-power, transparent optical network interface for high bandwidth off-chip interconnects

Odile Liboiron-Ladouceur, Howard Wang, Ajay S. Garg, and Keren Bergman  »View Author Affiliations


Optics Express, Vol. 17, Issue 8, pp. 6550-6561 (2009)
http://dx.doi.org/10.1364/OE.17.006550


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Abstract

The recent emergence of multicore architectures and chip multiprocessors (CMPs) has accelerated the bandwidth requirements in high-performance processors for both on-chip and off-chip interconnects. For next generation computing clusters, the delivery of scalable power efficient off-chip communications to each compute node has emerged as a key bottleneck to realizing the full computational performance of these systems. The power dissipation is dominated by the off-chip interface and the necessity to drive high-speed signals over long distances. We present a scalable photonic network interface approach that fully exploits the bandwidth capacity offered by optical interconnects while offering significant power savings over traditional E/O and O/E approaches. The power-efficient interface optically aggregates electronic serial data streams into a multiple WDM channel packet structure at time-of-flight latencies. We demonstrate a scalable optical network interface with 70% improvement in power efficiency for a complete end-to-end PCI Express data transfer.

© 2009 Optical Society of America

OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(200.4650) Optics in computing : Optical interconnects
(250.5300) Optoelectronics : Photonic integrated circuits

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: December 11, 2008
Revised Manuscript: March 20, 2009
Manuscript Accepted: April 1, 2009
Published: April 6, 2009

Citation
Odile Liboiron-Ladouceur, Howard Wang, Ajay S. Garg, and Keren Bergman, "Low-power, transparent optical network interface for high bandwidth off-chip interconnects," Opt. Express 17, 6550-6561 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-8-6550


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