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We present SWAN, a system that boosts the utilization of inter-datacenter networks by centrally controlling when and how much traffic each service sends and frequently re-configuring the network's data plane to match current traffic demand. But done simplistically, these re-configurations can also cause severe, transient congestion because different(More)
We describe techniques that enable fabrication of a new class of photonic devices based on free UH-Q microresonators. Preliminary results show that free silica microtoroids with Qs above 30 million can be fabricated and transferred to different platforms for integration with a variety of photonic devices. Very high-order microring resonator filters for WDM(More)
With the explosive growth in the demand for cloud services, the Data Center and Data Center Interconnect have to achieve hyper-scale and provide unprecedented elasticity and resource availability. The underlay network infrastructure has to scale to support tens of millions of physical endpoints at low cost; the virtualized overlay layer has to scale to(More)
Most modern routers consist of several line cards that perform packet lookup and forwarding, all controlled by a control plane that acts as the brain of the router, performing essential tasks such as management functions, error reporting, control functions including route calculations, and adjacency maintenance. This control plane has many names; in this(More)
In-Vehicle Displays (IVDs) have the potential to reduce fuel consumption rates (FCR), thus reducing emissions from in-use vehicles. This project is one of the first to simultaneously explore the impact of IVDs and driver training on both fuel consumption and driver behaviour in Canada. To evaluate the effectiveness of IVDs, a field trial was conducted by(More)
We present the design and experimental evaluation of an Optical Multicast System for Data Center Networks, a hardware-software system architecture that uniquely integrates passive optical splitters in a hybrid network architecture for faster and simpler delivery of multicast traffic flows. An application-driven control plane manages the integrated optical(More)
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