Photonics devices : design, fabrication, and experiment

Conventional optical waveguides based on either index or interference guiding pose a challenge, because a high index core cannot guide effectively as its dimensions scale down – the power in that case being largely transmitted in the cladding. Recently, guiding light in a nanometer c...

Full description

Saved in:
Bibliographic Details
Main Author: He, Yue.
Other Authors: Ng Beng Koon
Format: Final Year Project
Language:English
Published: 2009
Subjects:
Online Access:http://hdl.handle.net/10356/17848
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
id sg-ntu-dr.10356-17848
record_format dspace
spelling sg-ntu-dr.10356-178482023-07-07T17:24:08Z Photonics devices : design, fabrication, and experiment He, Yue. Ng Beng Koon School of Electrical and Electronic Engineering A*STAR Institute of High Performance Computing DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics Conventional optical waveguides based on either index or interference guiding pose a challenge, because a high index core cannot guide effectively as its dimensions scale down – the power in that case being largely transmitted in the cladding. Recently, guiding light in a nanometer core is possible by creating a large discontinuity of electric field at the high/low index interface. We propose a nanometer-scale air core embedded in silicon demonstrating superior optical confinement and approximate a solution with Marcatili’s method. We study the power confinement, intensity, and parametric dependency using FDTD for two polarizations (Quasi-TE and Quasi-TM). Optical confinement is 28% higher compared to that of slot waveguides and the core intensity per µm2 is 95% higher than in the silicon region. An investigation on potential applications of the proposed waveguide structure, with different core active material choices was also conducted in this report, suggesting high performance amplitude modulator can be made based on the electro-optical polymer and our novel embedded core waveguide. Bachelor of Engineering 2009-06-17T03:32:18Z 2009-06-17T03:32:18Z 2009 2009 Final Year Project (FYP) http://hdl.handle.net/10356/17848 en Nanyang Technological University 68 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
spellingShingle DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
He, Yue.
Photonics devices : design, fabrication, and experiment
description Conventional optical waveguides based on either index or interference guiding pose a challenge, because a high index core cannot guide effectively as its dimensions scale down – the power in that case being largely transmitted in the cladding. Recently, guiding light in a nanometer core is possible by creating a large discontinuity of electric field at the high/low index interface. We propose a nanometer-scale air core embedded in silicon demonstrating superior optical confinement and approximate a solution with Marcatili’s method. We study the power confinement, intensity, and parametric dependency using FDTD for two polarizations (Quasi-TE and Quasi-TM). Optical confinement is 28% higher compared to that of slot waveguides and the core intensity per µm2 is 95% higher than in the silicon region. An investigation on potential applications of the proposed waveguide structure, with different core active material choices was also conducted in this report, suggesting high performance amplitude modulator can be made based on the electro-optical polymer and our novel embedded core waveguide.
author2 Ng Beng Koon
author_facet Ng Beng Koon
He, Yue.
format Final Year Project
author He, Yue.
author_sort He, Yue.
title Photonics devices : design, fabrication, and experiment
title_short Photonics devices : design, fabrication, and experiment
title_full Photonics devices : design, fabrication, and experiment
title_fullStr Photonics devices : design, fabrication, and experiment
title_full_unstemmed Photonics devices : design, fabrication, and experiment
title_sort photonics devices : design, fabrication, and experiment
publishDate 2009
url http://hdl.handle.net/10356/17848
_version_ 1772825865883746304