MIT Libraries logoDSpace@MIT

MIT
View Item 
  • DSpace@MIT Home
  • MIT Libraries
  • MIT Theses
  • Doctoral Theses
  • View Item
  • DSpace@MIT Home
  • MIT Libraries
  • MIT Theses
  • Doctoral Theses
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Optical signal generation, stabilization, and manipulation in broadband silicon photonics

Author(s)
Magden, Emir Salih
Thumbnail
DownloadFull printable version (29.63Mb)
Other Contributors
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science.
Advisor
Michael R. Watts and Leslie A. Kolodziejski.
Terms of use
MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission. http://dspace.mit.edu/handle/1721.1/7582
Metadata
Show full item record
Abstract
Together with the increasing number of applications in vastly different parts of the electromagnetic spectrum, more versatile, stable, and capable light generation and manipulation techniques are required in integrated photonics. In this thesis, using CMOS fabrication capabilities, and a single layer back-end deposition process, CMOS-compatible lasers are developed using aluminum oxide as the host medium. First, a low temperature deposition process is detailed, and erbium-based lasers are demonstrated in the C-band. Then, thulium is studied and characterized as a dopant for applications at longer wavelengths. On-chip frequency stability issues are addressed by investigating the thermo-optic characteristics of various CMOS-compatible media. Negative thermo-optic coefficient of titanium dioxide is utilized to compensate for the all-positive thermal index shifts in the Si/SiN waveguide platform. An athermal resonator with resonances that exhibit ultra-low thermal shifts is created and used to stabilize a continuous-wave laser. Compared to a conventional SiN resonator, the athermal resonator is shown to significantly reduce the frequency noise of a locked laser. Switching to design-based solutions, the concept of spectrally-selective waveguides that can spatially confine the mode depending on the wavelength are demonstrated for the first time. The spectrally-selective waveguides are then used to design and demonstrate the first on-chip transmissive dichroic filter with the sharpest roll-offs to date. Finally, directional coupler based solutions are studied to address wavelength selectivity for octave-wide signals, and propose designs for ultra-wideband couplers.
Description
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2018.
 
Cataloged from PDF version of thesis.
 
Includes bibliographical references (pages 169-175).
 
Date issued
2018
URI
http://hdl.handle.net/1721.1/115769
Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Publisher
Massachusetts Institute of Technology
Keywords
Electrical Engineering and Computer Science.

Collections
  • Doctoral Theses

Browse

All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

Login

Statistics

OA StatisticsStatistics by CountryStatistics by Department
MIT Libraries
PrivacyPermissionsAccessibilityContact us
MIT
Content created by the MIT Libraries, CC BY-NC unless otherwise noted. Notify us about copyright concerns.