A Nanosensor Based on a Metal-Insulator-Metal Bus Waveguide with a Stub Coupled with a Racetrack Ring Resonator

A Nanosensor Based on a Metal-Insulator-Metal Bus Waveguide with a Stub Coupled with a Racetrack Ring Resonator

A nanostructure comprising the metal-insulator-metal (MIM) bus waveguide with a stub coupled with a racetrack ring resonator is designed. The spectral characteristics of the proposed structure are analyzed via the finite element method (FEM). The results show that there is a sharp Fano resonance pro...

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Bibliographic Details
Main Authors: Haoran Shi, Shubin Yan, Xiaoyu Yang, Xiushan Wu, Wenchang Wu, Ertian Hua
Format: Article
Language:English
Published: MDPI AG 2021-04-01
Series:Micromachines
Subjects:
MIM
racetrack ring resonator
Fano resonance
EIT-like
nanosensor
Online Access:https://www.mdpi.com/2072-666X/12/5/495
id doaj-7d99ea0c70d248a896bd7d5a2b5054e7
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spelling doaj-7d99ea0c70d248a896bd7d5a2b5054e72021-04-27T23:04:27ZengMDPI AGMicromachines2072-666X2021-04-011249549510.3390/mi12050495A Nanosensor Based on a Metal-Insulator-Metal Bus Waveguide with a Stub Coupled with a Racetrack Ring ResonatorHaoran Shi0Shubin Yan1Xiaoyu Yang2Xiushan Wu3Wenchang Wu4Ertian Hua5School of Instrument and Electronics, North University of China, Taiyuan 030051, ChinaSchool of Instrument and Electronics, North University of China, Taiyuan 030051, ChinaSchool of Instrument and Electronics, North University of China, Taiyuan 030051, ChinaSchool of Electronical Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310058, ChinaZhejiang-Belarus Joint Laboratory of Intelligent Equipment and System for Water Con-Servancy and Hydropower Safety Monitoring, Hangzhou 310018, ChinaSchool of Electronical Engineering, Zhejiang University of Water Resources and Electric Power, Hangzhou 310058, ChinaA nanostructure comprising the metal-insulator-metal (MIM) bus waveguide with a stub coupled with a racetrack ring resonator is designed. The spectral characteristics of the proposed structure are analyzed via the finite element method (FEM). The results show that there is a sharp Fano resonance profile and electromagnetically induced transparency (EIT)-like effect, which are excited by a coupling between the MIM bus waveguide with a stub and the racetrack ring resonator. The normalized H<sub>Z</sub> field is affected by the displacement of the ring from the stub <i>x</i> greatly. The influence of the geometric parameters of the sensor design on the sensing performance is discussed. The sensitivity of the proposed structure can reach 1774 nm/RIU with a figure of merit of 61. The proposed structure has potential in nanophotonic sensing applications.https://www.mdpi.com/2072-666X/12/5/495MIMracetrack ring resonatorFano resonanceEIT-likenanosensor
collection DOAJ
language English
format Article
sources DOAJ
author Haoran Shi
Shubin Yan
Xiaoyu Yang
Xiushan Wu
Wenchang Wu
Ertian Hua
spellingShingle Haoran Shi
Shubin Yan
Xiaoyu Yang
Xiushan Wu
Wenchang Wu
Ertian Hua
A Nanosensor Based on a Metal-Insulator-Metal Bus Waveguide with a Stub Coupled with a Racetrack Ring Resonator
Micromachines
MIM
racetrack ring resonator
Fano resonance
EIT-like
nanosensor
author_facet Haoran Shi
Shubin Yan
Xiaoyu Yang
Xiushan Wu
Wenchang Wu
Ertian Hua
author_sort Haoran Shi
title A Nanosensor Based on a Metal-Insulator-Metal Bus Waveguide with a Stub Coupled with a Racetrack Ring Resonator
title_short A Nanosensor Based on a Metal-Insulator-Metal Bus Waveguide with a Stub Coupled with a Racetrack Ring Resonator
title_full A Nanosensor Based on a Metal-Insulator-Metal Bus Waveguide with a Stub Coupled with a Racetrack Ring Resonator
title_fullStr A Nanosensor Based on a Metal-Insulator-Metal Bus Waveguide with a Stub Coupled with a Racetrack Ring Resonator
title_full_unstemmed A Nanosensor Based on a Metal-Insulator-Metal Bus Waveguide with a Stub Coupled with a Racetrack Ring Resonator
title_sort nanosensor based on a metal-insulator-metal bus waveguide with a stub coupled with a racetrack ring resonator
publisher MDPI AG
series Micromachines
issn 2072-666X
publishDate 2021-04-01
description A nanostructure comprising the metal-insulator-metal (MIM) bus waveguide with a stub coupled with a racetrack ring resonator is designed. The spectral characteristics of the proposed structure are analyzed via the finite element method (FEM). The results show that there is a sharp Fano resonance profile and electromagnetically induced transparency (EIT)-like effect, which are excited by a coupling between the MIM bus waveguide with a stub and the racetrack ring resonator. The normalized H<sub>Z</sub> field is affected by the displacement of the ring from the stub <i>x</i> greatly. The influence of the geometric parameters of the sensor design on the sensing performance is discussed. The sensitivity of the proposed structure can reach 1774 nm/RIU with a figure of merit of 61. The proposed structure has potential in nanophotonic sensing applications.
topic MIM
racetrack ring resonator
Fano resonance
EIT-like
nanosensor
url https://www.mdpi.com/2072-666X/12/5/495
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