MARC 主機 00000nam  2200421   4500 
001    AAI1499925 
005    20120608095729.5 
008    120608s2011    ||||||||||||||||| ||eng d 
020    9781124901183 
035    (UMI)AAI1499925 
040    UMI|cUMI 
100 1  Espinoza, David 
245 10 Design of an Electro-Optic Modulator for High Speed 
       Communications 
300    72 p 
500    Source: Masters Abstracts International, Volume: 50-02, 
       page: 1090 
500    Adviser: Alan Mickelson 
502    Thesis (M.S.)--University of Colorado at Boulder, 2011 
520    The telecommunications and computer technology industries 
       have been requiring higher communications speeds at all 
       levels for devices, components and interconnected systems.
       Optical devices and optical interconnections are a viable 
       alternative over other traditional technologies such as 
       copper-based interconnections. Latency reductions can be 
       achieved through the use of optical interconnections. 
       Currently, a particular architecture for optical 
       interconnections is being studied at the University of 
       Colorado at Boulder in the EMT/NANO project, called 
       Broadcast Optical Interconnects for Global Communication 
       in Many-Core Chip Multiprocessor 
520    As with most types of networks, including optical networks,
       one of the most important components are modulators. 
       Therefore adequate design and fabrication techniques for 
       modulators contribute to higher modulation rates which 
       lead to improve the efficiency and reductions in the 
       latency of the optical network. Electro-optical modulators
       are presented in this study as an alternative to achieve 
       this end 
520    In recent years, nonlinear optical (NLO) materials have 
       been used for the fabrication of high-speed electro-
       optical modulators. Polymers doped with chromophores are 
       an alternative among NLO materials because they can 
       develop large electro-optic coefficients and low 
       dielectric constants. These two factors are critical for 
       achieving high-speed modulation rates. These polymer-based
       electro-optical modulators can be fabricated using 
       standard laboratory techniques, such as polymer spin-
       coating onto substrates, UV bleaching to achieve a 
       refractive index variation and poling techniques to align 
       the chromophores in cured polymers 
520    The design of the electro-optic modulators require the use
       of the optical parameters of the materials to be used. 
       Therefore the characterization of these materials is a 
       required previous step. This characterization is performed
       by the fabrication of chromophores-doped polymer samples 
       and conducting transmission and reflection measurements to
       obtain the optical density. Then, using the Kramer-Kronig 
       analysis, the refractive index change can be calculated. 
       Another measured parameter is the electro-optic 
       coefficient. After obtaining these optical and electric 
       parameters, they are used as inputs in the Computer Aid 
       Design (CAD) software COMSOL Multiphysics to carry out the
       simulation of the modes of the waveguide 
520    Finally, an analysis of nanotechnology and nanophotonics 
       in telecommunications can show us how the design of 
       optical devices using NLO materials fits in a much larger 
       technological area. It is important to have an 
       understanding of the industry that this technology is a 
       part of. A roadmap for nanophotonics shows where this 
       technology is going and what kind of technological 
       constraints or needs it can solve 
590    School code: 0051 
650  4 Chemistry, Polymer 
650  4 Engineering, Electronics and Electrical 
650  4 Physics, Optics 
690    0495 
690    0544 
690    0752 
710 2  University of Colorado at Boulder.|bTelecommunications 
773 0  |tMasters Abstracts International|g50-02 
856 40 |uhttp://pqdd.sinica.edu.tw/twdaoapp/servlet/
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