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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 33,
  • Issue 8,
  • pp. 1578-1585
  • (2015)

Experimental Demonstration of Flexible Bandwidth Optical Data Center Core Network With All-to-All Interconnectivity

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Abstract

This paper proposes and demonstrates a flexible-bandwidth optical interconnect architecture for data centers exploiting wavelength routing in arrayed waveguide grating routers and fast tunable lasers. The proposed architecture provides hierarchical all-to-all connectivity with low contention and dynamic interconnection reconfiguration for higher bandwidth provisioning between hot spots. An eight-cluster core network experiment testbed with hierarchical all-to-all interconnection shows 1.77× throughput increase and 1.19× network energy efficiency improvement in the case of intercluster hot-spot traffic, while guaranteeing more than 97% throughput for the portion of the traffic with uniform random distribution.

© 2014 IEEE

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