Testing and modeling of photo-electric modulators
Name
836762873-MIT.pdf
Description
Full printable version
Size
6.98 MB
Format
Adobe PDF
Checksum (MD5)
f06ffd1509b75ac47f0a3521e8106589
Author(s)
Weaver, Matthew J. (Matthew James)
Advisor(s)
Rajeev Ram and Erich Ippen.
Date Issued
2012
Publisher
Massachusetts Institute of Technology
Abstract
Optical links are a promising alternative to the electrical interconnects that are currently used between chips within a computer. A crucial part of an optical link is a modulator, a device that converts an electrical signal into an optical signal. This thesis explores the physics of how these modulators operate. I built a general purpose optical and electrical testing station to perform these measurements. The optical transmission spectra of the set of modulators studied had extinction ratios in the range of 5 to 27 dB, which is sufficient for modulation. I developed analytical and T-Matrix models to extract physical parameters from the transmission scans, such as light transmission, loss in the ring, and index of refraction of the contact section. The modulators worked with an open eye up to frequencies of 600 MHz. A theoretical model was developed to match the data and experiment with injection and recombination dynamics. Finally, several design solutions are suggested to further improve the modulators and to move towards the goal of modulators that operate at 5 Gb/s.
Description
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2012.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 65-66).
Subjects
Physics.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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