Journal
JOURNAL OF LIGHTWAVE TECHNOLOGY
Volume 33, Issue 8, Pages 1578-1585Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2014.2387205
Keywords
Arrayed waveguide grating routers; data center networking; elastic optical networks; flexible bandwidth; optical interconnects
Funding
- DoD Agreement [W911NF-13-1-0090]
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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 1.77x throughput increase and 1.19x 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.
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