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Tunable Filters for Novel Optical Components

Lawandi, Roseanna George
http://orcid.org/0000-0002-4288-6757
http://rave.ohiolink.edu/etdc/view?acc_num=dayton1702564498435151

Abstract Details

2023, Doctor of Philosophy (Ph.D.), University of Dayton, Electro-Optics.
Photonics-based technologies are becoming increasingly common in consumer and industrial applications. Many of them require light manipulation such as intensity modulation, phase modulation or polarization control to achieve their desired functions. These require tunable optical materials. While liquid crystal-based tunable devices have been the defacto standard in most applications, the need for higher speeds, compact size, light weight, temperature stability, longevity and robustness have required researchers to explore alternate methods of achieving this tunability. This need forms the basic inspiration for this work. In this dissertation, a number of tunable and variable optical components have been designed, fabricated and demonstrated. This includes a continuously variable Fourier filter integrated with a photodetector array for multispectral detection, and tunable devices based on phase change materials (PCM) such as switchable Distributed Bragg Reflectors (DBR) using Ge2Sb2Te5 (GST), and switchable wire grid polarizers based on Vanadium dioxide (VO2). This dissertation also includes fundamental studies on the development and patterning of phase change materials including electrically addressable tungsten-doped GST, nano-patterned Sb2Se3, and direct laser patterning of GST films.
Andrew Sarangan, Ph.D., P.E. (Committee Chair)
Keigo Hirakawa, Ph.D. (Committee Member)
Imad Agha, Ph.D. (Committee Member)
Michael McConney, Ph.D. (Committee Member)
118 p.
Electrical Engineering; Engineering; Nanotechnology; Optics

Recommended Citations

Citations

  • Lawandi, R. G. (2023). Tunable Filters for Novel Optical Components [Doctoral dissertation, University of Dayton]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1702564498435151

    APA Style (7th edition)

  • Lawandi, Roseanna. Tunable Filters for Novel Optical Components . 2023. University of Dayton, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=dayton1702564498435151.

    MLA Style (8th edition)

  • Lawandi, Roseanna. "Tunable Filters for Novel Optical Components ." Doctoral dissertation, University of Dayton, 2023. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1702564498435151

    Chicago Manual of Style (17th edition)

dayton1702564498435151
42
© 2023, all rights reserved.
This open access ETD is published by University of Dayton and OhioLINK.