Refractive Index Sensor Based on a Metal-Insulator-Metal Bus Waveguide Coupled with a U-Shaped Ring Resonator

In this study, a novel refractive index sensor structure was designed consisting of a metal-insulator-metal (MIM) waveguide with two rectangular baffles and a U-Shaped Ring Resonator (USRR). The finite element method was used to theoretically investigate the sensor’s transmission characteristics. Th...

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Detalles Bibliográficos
Autores principales: Zhang, Xiaoyu, Yan, Shubin, Liu, Jilai, Ren, Yifeng, Zhang, Yi, Shen, Lifang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9144545/
https://www.ncbi.nlm.nih.gov/pubmed/35630217
http://dx.doi.org/10.3390/mi13050750
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author Zhang, Xiaoyu
Yan, Shubin
Liu, Jilai
Ren, Yifeng
Zhang, Yi
Shen, Lifang
author_facet Zhang, Xiaoyu
Yan, Shubin
Liu, Jilai
Ren, Yifeng
Zhang, Yi
Shen, Lifang
author_sort Zhang, Xiaoyu
collection PubMed
description In this study, a novel refractive index sensor structure was designed consisting of a metal-insulator-metal (MIM) waveguide with two rectangular baffles and a U-Shaped Ring Resonator (USRR). The finite element method was used to theoretically investigate the sensor’s transmission characteristics. The simulation results show that Fano resonance is a sharp asymmetric resonance generated by the interaction between the discrete narrow-band mode and the successive wide-band mode. Next, the formation of broadband and narrowband is further studied, and finally the key factors affecting the performance of the sensor are obtained. The best sensitivity of this refractive-index sensor is 2020 nm/RIU and the figure of merit (FOM) is 53.16. The presented sensor has the potential to be useful in nanophotonic sensing applications.
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spelling pubmed-91445452022-05-29 Refractive Index Sensor Based on a Metal-Insulator-Metal Bus Waveguide Coupled with a U-Shaped Ring Resonator Zhang, Xiaoyu Yan, Shubin Liu, Jilai Ren, Yifeng Zhang, Yi Shen, Lifang Micromachines (Basel) Article In this study, a novel refractive index sensor structure was designed consisting of a metal-insulator-metal (MIM) waveguide with two rectangular baffles and a U-Shaped Ring Resonator (USRR). The finite element method was used to theoretically investigate the sensor’s transmission characteristics. The simulation results show that Fano resonance is a sharp asymmetric resonance generated by the interaction between the discrete narrow-band mode and the successive wide-band mode. Next, the formation of broadband and narrowband is further studied, and finally the key factors affecting the performance of the sensor are obtained. The best sensitivity of this refractive-index sensor is 2020 nm/RIU and the figure of merit (FOM) is 53.16. The presented sensor has the potential to be useful in nanophotonic sensing applications. MDPI 2022-05-09 /pmc/articles/PMC9144545/ /pubmed/35630217 http://dx.doi.org/10.3390/mi13050750 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Xiaoyu
Yan, Shubin
Liu, Jilai
Ren, Yifeng
Zhang, Yi
Shen, Lifang
Refractive Index Sensor Based on a Metal-Insulator-Metal Bus Waveguide Coupled with a U-Shaped Ring Resonator
title Refractive Index Sensor Based on a Metal-Insulator-Metal Bus Waveguide Coupled with a U-Shaped Ring Resonator
title_full Refractive Index Sensor Based on a Metal-Insulator-Metal Bus Waveguide Coupled with a U-Shaped Ring Resonator
title_fullStr Refractive Index Sensor Based on a Metal-Insulator-Metal Bus Waveguide Coupled with a U-Shaped Ring Resonator
title_full_unstemmed Refractive Index Sensor Based on a Metal-Insulator-Metal Bus Waveguide Coupled with a U-Shaped Ring Resonator
title_short Refractive Index Sensor Based on a Metal-Insulator-Metal Bus Waveguide Coupled with a U-Shaped Ring Resonator
title_sort refractive index sensor based on a metal-insulator-metal bus waveguide coupled with a u-shaped ring resonator
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9144545/
https://www.ncbi.nlm.nih.gov/pubmed/35630217
http://dx.doi.org/10.3390/mi13050750
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