Design and Analysis of Asymmetric Capsule-Shaped Metallic Cavities for Unidirectional Waveguide Coupling
We propose and numerically investigate a novel asymmetric capsule-shaped metallic cavity (ACMC) structure for unidirectional waveguide coupling. By introducing cylindrical facets at cavity ends with different radius, asymmetric resonant mode is confined inside the cavity so that the evanescent energ...
Main Authors: | , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
IEEE
2020-01-01
|
Series: | IEEE Photonics Journal |
Subjects: | |
Online Access: | https://ieeexplore.ieee.org/document/9239875/ |
id |
doaj-1dc896ff93364ea1afc48a307f65d88c |
---|---|
record_format |
Article |
spelling |
doaj-1dc896ff93364ea1afc48a307f65d88c2021-05-19T23:00:16ZengIEEEIEEE Photonics Journal1943-06552020-01-011261810.1109/JPHOT.2020.30335489239875Design and Analysis of Asymmetric Capsule-Shaped Metallic Cavities for Unidirectional Waveguide CouplingBaifu Zhang0https://orcid.org/0000-0002-9634-6086Haifeng Hu1Hao Wang2Cheng Han3Zhe Shen4https://orcid.org/0000-0003-3370-8913Ji Xu5Ming Sun6Li Li7https://orcid.org/0000-0003-0913-2395School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaCollege of Electronic and Optical Engineering & College of Microelectronics, Nanjing University of Posts and Telecommunications, Nanjing, ChinaSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaSchool of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, ChinaWe propose and numerically investigate a novel asymmetric capsule-shaped metallic cavity (ACMC) structure for unidirectional waveguide coupling. By introducing cylindrical facets at cavity ends with different radius, asymmetric resonant mode is confined inside the cavity so that the evanescent energy can be unevenly coupled into the two directions of the waveguide underneath the cavity. We conduct three-dimensional finite-difference time-domain simulations and demonstrate the effectiveness of the proposed ACMC-based unidirectional waveguide coupling. Besides, by modifying suitable geometry of the proposed structure, the extinction ratio and coupling efficiencies of both directions of the waveguide can be flexibly designed, resulting in unequal coupling of optical energy. In addition, the dependence of the waveguide-coupling properties on ACMC geometry is also numerically investigated in this paper.https://ieeexplore.ieee.org/document/9239875/Semiconductor lasersWaveguidesPlasmonics |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Baifu Zhang Haifeng Hu Hao Wang Cheng Han Zhe Shen Ji Xu Ming Sun Li Li |
spellingShingle |
Baifu Zhang Haifeng Hu Hao Wang Cheng Han Zhe Shen Ji Xu Ming Sun Li Li Design and Analysis of Asymmetric Capsule-Shaped Metallic Cavities for Unidirectional Waveguide Coupling IEEE Photonics Journal Semiconductor lasers Waveguides Plasmonics |
author_facet |
Baifu Zhang Haifeng Hu Hao Wang Cheng Han Zhe Shen Ji Xu Ming Sun Li Li |
author_sort |
Baifu Zhang |
title |
Design and Analysis of Asymmetric Capsule-Shaped Metallic Cavities for Unidirectional Waveguide Coupling |
title_short |
Design and Analysis of Asymmetric Capsule-Shaped Metallic Cavities for Unidirectional Waveguide Coupling |
title_full |
Design and Analysis of Asymmetric Capsule-Shaped Metallic Cavities for Unidirectional Waveguide Coupling |
title_fullStr |
Design and Analysis of Asymmetric Capsule-Shaped Metallic Cavities for Unidirectional Waveguide Coupling |
title_full_unstemmed |
Design and Analysis of Asymmetric Capsule-Shaped Metallic Cavities for Unidirectional Waveguide Coupling |
title_sort |
design and analysis of asymmetric capsule-shaped metallic cavities for unidirectional waveguide coupling |
publisher |
IEEE |
series |
IEEE Photonics Journal |
issn |
1943-0655 |
publishDate |
2020-01-01 |
description |
We propose and numerically investigate a novel asymmetric capsule-shaped metallic cavity (ACMC) structure for unidirectional waveguide coupling. By introducing cylindrical facets at cavity ends with different radius, asymmetric resonant mode is confined inside the cavity so that the evanescent energy can be unevenly coupled into the two directions of the waveguide underneath the cavity. We conduct three-dimensional finite-difference time-domain simulations and demonstrate the effectiveness of the proposed ACMC-based unidirectional waveguide coupling. Besides, by modifying suitable geometry of the proposed structure, the extinction ratio and coupling efficiencies of both directions of the waveguide can be flexibly designed, resulting in unequal coupling of optical energy. In addition, the dependence of the waveguide-coupling properties on ACMC geometry is also numerically investigated in this paper. |
topic |
Semiconductor lasers Waveguides Plasmonics |
url |
https://ieeexplore.ieee.org/document/9239875/ |
work_keys_str_mv |
AT baifuzhang designandanalysisofasymmetriccapsuleshapedmetalliccavitiesforunidirectionalwaveguidecoupling AT haifenghu designandanalysisofasymmetriccapsuleshapedmetalliccavitiesforunidirectionalwaveguidecoupling AT haowang designandanalysisofasymmetriccapsuleshapedmetalliccavitiesforunidirectionalwaveguidecoupling AT chenghan designandanalysisofasymmetriccapsuleshapedmetalliccavitiesforunidirectionalwaveguidecoupling AT zheshen designandanalysisofasymmetriccapsuleshapedmetalliccavitiesforunidirectionalwaveguidecoupling AT jixu designandanalysisofasymmetriccapsuleshapedmetalliccavitiesforunidirectionalwaveguidecoupling AT mingsun designandanalysisofasymmetriccapsuleshapedmetalliccavitiesforunidirectionalwaveguidecoupling AT lili designandanalysisofasymmetriccapsuleshapedmetalliccavitiesforunidirectionalwaveguidecoupling |
_version_ |
1721436197545312256 |