12 February 2009 A silicon photonic WDM network for high-performance macrochip communications
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Abstract
We introduce a novel approach to interconnect multiple chips together with a silicon photonic WDM point-to-point network enabled by optical proximity communications to act as a single large piece of logical silicon much larger than a single reticle limit. We call this structure a macrochip. This non-blocking network provides all-to-all low-latency connectivity while maximizing bisection bandwidth, making it ideal for multi-core and multi-processor interconnections. We envision bisection bandwidth up to TBps for an 8x8 macrochip design. And a 5-6x improvement in latency can be achieved when compared to a purely electronic implementation. We also observe better overall performance over other optical network architectures.
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Xuezhe Zheng, Pranay Koka, Herb Schwetman, Jon Lexau, Ron Ho, Ivan Shubin, John E. Cunningham, Ashok V. Krishnamoorthy, "A silicon photonic WDM network for high-performance macrochip communications", Proc. SPIE 7221, Photonics Packaging, Integration, and Interconnects IX, 72210E (12 February 2009); doi: 10.1117/12.813420; https://doi.org/10.1117/12.813420
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