• Publications
  • Influence
RotorNet: A Scalable, Low-complexity, Optical Datacenter Network
TLDR
The ever-increasing bandwidth requirements of modern datacenters have led researchers to propose networks based upon optical circuit switches, but these proposals face significant deployment challenges. Expand
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Expanding across time to deliver bandwidth efficiency and low latency
TLDR
We present Opera, a dynamic network that delivers latency-sensitive traffic quickly by relying on multi-hop forwarding in the same way as expander-graph-based approaches, but provides near-optimal bandwidth for bulk flows through direct forwarding over time-varying source-to-destination circuits. Expand
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P-FatTree: A multi-channel datacenter network topology
TLDR
The bandwidth and latency requirements of next-generation datacenter networks stress the limits of CMOS manufacturing. Expand
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Toward Optical Switching in the Data Center (Invited Paper)
TLDR
Optical switching may be instrumental in meeting the cost, power, and bandwidth requirements of future data center networks, but its widespread deployment has a number of technical challenges associated with its circuit-switched characteristics. Expand
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A Scalable, Partially Configurable Optical Switch for Data Center Networks
Optical circuit switching may be instrumental in meeting the cost, energy, and aggregate bandwidth requirements of future data center networks. However, conventional MEMS beam-steering cross-connectsExpand
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Scaling Limits of MEMS Beam-Steering Switches for Data Center Networks
TLDR
We present a first principles analysis of the theoretical scaling limits of transparent nonblocking optical switches based on MEMS electrostatic tilt mirror devices that scale as a function of switch port count, crosstalk, and insertion loss. Expand
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Fiber Bundle Image Relay for Monocentric Lenses
We characterize the spatially variant transfer function of a fiber coupled monocentric lens imager, and show image processing techniques to reduce defects caused by the fiber bundle, improve imageExpand
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Quantitative analysis and temperature-induced variations of moiré pattern in fiber-coupled imaging sensors.
Imaging fiber bundles can map the curved image surface formed by some high-performance lenses onto flat focal plane detectors. The relative alignment between the focal plane array pixels and theExpand
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Digital image processing for wide-angle highly spatially variant imagers
TLDR
We show a spatially variant deconvolution process11,12 that uses focal swept images to extend the depth-of-focus of a For further information: Send correspondence to Stephen J. Olivas. Expand
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Scaling limits of free-space tilt mirror MEMS switches for data center networks
TLDR
We present a first-principles analysis of the scaling of switch response speed as a function of port count, crosstalk, and insertion loss, based on physical optics and kinematics of canonical MEMS tilt mirror switch structures. Expand
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