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Laser micromachining of active and passive photonic integrated circuits
(Massachusetts Institute of Technology, 2004)
This thesis describes the development of advanced laser resonators and applications of laser-induced micromachining for photonic circuit fabrication. Two major advantages of laser-induced micromachining are direct patterning ...
Computational soundness for standard assumptions of formal cryptography
(Massachusetts Institute of Technology, 2004)
This implementation is conceptually simple, and relies only on general assumptions. Specifically, it can be thought of as a 'self-referential' variation on a well-known encryption scheme. 4. Lastly, we show how the ...
Maintaining secrecy when information leakage is unavoidable
(Massachusetts Institute of Technology, 2004)
(cont.) We apply the framework to get new results, creating (a) encryption schemes with very short keys, and (b) hash functions that leak no information about their input, yet-paradoxically-allow testing if a candidate ...
Machine learning on Web documents
(Massachusetts Institute of Technology, 2004)
The Web is a tremendous source of information: so tremendous that it becomes difficult for human beings to select meaningful information without support. We discuss tools that help people deal with web information, by, for ...
Electromagnetics in characterizations
(Massachusetts Institute of Technology, 2003)
(cont.) Characterization of the differential guided mode of a coupled-strip transmission line allows us to understand its behaviors in high frequency circuit applications. S-parameters of the differential mode of a ...
X-ray lithographic alignment and overlay applied to double-gate MOSFET fabrication
(Massachusetts Institute of Technology, 2003)
Double-gate MOSFETs represent a significant solution to transistor scaling problems and promise a dramatic improvement in both performance and power consumption. In this work, a planar lithographic process is presented ...
Formally modeling, analyzing, and designing network protocols : a case study on retransmission-based reliable multicast protocols
(Massachusetts Institute of Technology, 2003)
In this thesis, we conduct an extensive case study on formally modeling, analyzing, and designing retransmission-based reliable multicast protocols. We first present an abstract model of the communication service that ...
The hydrogen-induced piezoelectric effect in InP HEMTs
(Massachusetts Institute of Technology, 2003)
Hydrogen exposure of III-V HEMTs has been shown to cause a threshold voltage shift, [delta] V[sub]T. This is a serious reliability concern. This effect has been attributed to a H-induced piezoelectric effect. Formation of ...
Experimental study of a 1.5-MW, 110-GHz gyrotron oscillator
(Massachusetts Institute of Technology, 2005)
This thesis reports the design, construction and testing of a 1.5 MW, 110 GHz gyrotron oscillator. This high power microwave tube has been proposed as the next evolutionary step for gyrotrons used to provide electron ...
Applications of group theory to few-body physics
(Massachusetts Institute of Technology, 2005)
Over the past fifteen years, there have been persistent claims of anomalous nuclear reactions in condensed matter environments. A Unified Model [38] has been proposed to systematically account for most of these anomalies. ...