Cited 0 time in webofscience Cited 0 time in scopus

Localization of light in a disordered two-dimensional photonic lattice

Title
Localization of light in a disordered two-dimensional photonic lattice
Authors
Kyeongmo Nam
DGIST Authors
Nam, Kyeongmo; Kim, Dae-HwanKim, Chil-Min
Advisor(s)
김칠민
Co-Advisor(s)
Dae-Hwan Kim
Issue Date
2020
Available Date
2020-06-23
Degree Date
2020-02
Type
Thesis
Description
CdS nanowire, disordered photonic lattice, Q-factor, FDTD.
Abstract
Photonic crystal structures have been developed to control the light propa gations for various engineering applications and fundamental researches. In this Theses, we study the properties of resonance modes of a CdS nanowire with four kinds of photonic systems such as a nanowire with a photonic crystal substrate, a nanowire with a disordered photonic lattice substrate, a nanowire with non-air hole substrate, and a bare nanowire. To study the properties of resonances modes, we compare quality factors of the resonance modes for the four cases of photonic systems. Whereas the quality factors of resonances modes in the bare nanowire is about 600, those in the nanowire with non-air hole substrate is about 900 due to reflection from the substrate. However, in case of the nanowire with a photonic crystal substrate, the quality factors of resonance modes increase up to 5000 due to lattice constant effects. In the nanowire with a disordered photonic lattice substrate, the quality factor reaches 2000, that is the value is in between the nanowire with non-air hole substrate and a nanowire with a photonic crystal substrate. This property is caused by optical localization in disorder mediums as proposed by Philip An derson.
Table Of Contents
I. Introduction 1 II. Numerical Method 3 III. Photonic Crystal (PhC) Analysis 7 3.1 Nanowire With Photonic Crystal (PhC) Analysis 9 3.2 Photonic Bandstructure 14 IV. Nanowire on Various substrate Systems 18 4.1 Bare Nanowire Analysis 21 4.2 Non-Air Hole Substrate Analysis 25 4.3 Nanowire with Disordered Photonic Lattice Analysis 29 V. Conclusion 34 References 36 Summary (요 약 문) 40
URI
http://dgist.dcollection.net/common/orgView/200000283252
http://hdl.handle.net/20.500.11750/11986
DOI
10.22677/Theses.200000283252
Degree
Master
Department
Emerging Materials Science
University
DGIST
Related Researcher
Files:
Collection:
Department of Emerging Materials ScienceThesesMaster


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE