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Device integration for silicon microphotonic platforms
(Massachusetts Institute of Technology, 2000)
Silicon ULSI compatible, high index contrast waveguides and devices provide high density integration for optical networking and on-chip optical interconnects. Four such waveguide systems were fabricated and analyzed: ...
Methods in wave propagation and scattering
(Massachusetts Institute of Technology, 2001)
Aspects of wave propagation and scattering with an emphasis on specific applications in engineering and physics are examined. Frequency-domain methods prevail. Both forward and inverse problems are considered. Typical ...
Stochastic realization theory for exact and approximate multiscale models
(Massachusetts Institute of Technology, 2005)
The thesis provides a detailed analysis of the independence structure possessed by multiscale models and demonstrates that such an analysis provides important insight into the multiscale stochastic realization problem. ...
Infection processes on networks with structural uncertainty
(Massachusetts Institute of Technology, 2008)
Over the last ten years, the interest in network phenomena and the potential for a global pandemic have produced a tremendous volume of research exploring the consequences of human interaction patterns for disease propagation. ...
Improving OLED technology for displays
(Massachusetts Institute of Technology, 2008)
Organic light emitting devices (OLEDs) are brightly emissive, efficient, have fast switching speeds, and are paper-thin in format, propelling their use as an emerging flat panel display technology. However, two primary ...
Modeling and design of an active silicon cochlea
(Massachusetts Institute of Technology, 2008)
Silicon cochleas are inspired by the biological cochlea and perform efficient spectrum analysis: They realize a bank of constant-Q Nth-order filters with O(N) efficiency rather than O(N²) efficiency due to their use of an ...
Generating multiple summaries based on computational model of perspective
(Massachusetts Institute of Technology, 2008)
Every story about an event offers a unique perspective about the event. A popular sporting event, such as a Major League Baseball game, is followed by several summary articles that show different points of view. The goal ...
Techniques for high-performance digital frequency synthesis and phase control
(Massachusetts Institute of Technology, 2008)
This thesis presents a 3.6-GHz, 500-kHz bandwidth digital [delta][sigma] frequency synthesizer architecture that leverages a recently invented noise-shaping time-to-digital converter (TDC) and an all-digital quantization ...
The paradigm of partial erasures
(Massachusetts Institute of Technology, 2008)
This thesis is a study of erasures in cryptographic protocols. Erasing old data and keys is an important capability of honest parties in cryptographic protocols. It is useful in many settings, including proactive security ...
The evolution of biodiversity : a simulation approach
(Massachusetts Institute of Technology, 1998)