Research on Fano Resonance Sensing Characteristics Based on Racetrack Resonant Cavity

To reduce the loss of the metal–insulator–metal waveguide structure in the near-infrared region, a plasmonic nanosensor structure based on a racetrack resonant cavity is proposed herein. Through finite element simulation, the transmission spectra of the sensor under different size parameters were an...

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Autores principales: Yaxin Yu, Jiangong Cui, Guochang Liu, Rongyu Zhao, Min Zhu, Guojun Zhang, Wendong Zhang
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Lenguaje:EN
Publicado: MDPI AG 2021
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Acceso en línea:https://doaj.org/article/db67072f19e544558db7f90aace8acf5
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spelling oai:doaj.org-article:db67072f19e544558db7f90aace8acf52021-11-25T18:23:23ZResearch on Fano Resonance Sensing Characteristics Based on Racetrack Resonant Cavity10.3390/mi121113592072-666Xhttps://doaj.org/article/db67072f19e544558db7f90aace8acf52021-11-01T00:00:00Zhttps://www.mdpi.com/2072-666X/12/11/1359https://doaj.org/toc/2072-666XTo reduce the loss of the metal–insulator–metal waveguide structure in the near-infrared region, a plasmonic nanosensor structure based on a racetrack resonant cavity is proposed herein. Through finite element simulation, the transmission spectra of the sensor under different size parameters were analyzed, and its influence on the sensing characteristics of the system was examined. The analysis results show that the structure can excite the double Fano resonance, which has a distinctive dependence on the size parameters of the sensor. The position and line shape of the resonance peak can be adjusted by changing the key parameters. In addition, the sensor has a higher sensitivity, which can reach 1503.7 nm/RIU when being used in refractive index sensing; the figure of merit is 26.8, and it can reach 0.75 nm/°C when it is used in temperature sensing. This structure can be used in optical integrated circuits, especially high-sensitivity nanosensors.Yaxin YuJiangong CuiGuochang LiuRongyu ZhaoMin ZhuGuojun ZhangWendong ZhangMDPI AGarticlemetal-insulator-metalracetrack resonant cavityFano resonancerefractive index sensingtemperature sensingMechanical engineering and machineryTJ1-1570ENMicromachines, Vol 12, Iss 1359, p 1359 (2021)
institution DOAJ
collection DOAJ
language EN
topic metal-insulator-metal
racetrack resonant cavity
Fano resonance
refractive index sensing
temperature sensing
Mechanical engineering and machinery
TJ1-1570
spellingShingle metal-insulator-metal
racetrack resonant cavity
Fano resonance
refractive index sensing
temperature sensing
Mechanical engineering and machinery
TJ1-1570
Yaxin Yu
Jiangong Cui
Guochang Liu
Rongyu Zhao
Min Zhu
Guojun Zhang
Wendong Zhang
Research on Fano Resonance Sensing Characteristics Based on Racetrack Resonant Cavity
description To reduce the loss of the metal–insulator–metal waveguide structure in the near-infrared region, a plasmonic nanosensor structure based on a racetrack resonant cavity is proposed herein. Through finite element simulation, the transmission spectra of the sensor under different size parameters were analyzed, and its influence on the sensing characteristics of the system was examined. The analysis results show that the structure can excite the double Fano resonance, which has a distinctive dependence on the size parameters of the sensor. The position and line shape of the resonance peak can be adjusted by changing the key parameters. In addition, the sensor has a higher sensitivity, which can reach 1503.7 nm/RIU when being used in refractive index sensing; the figure of merit is 26.8, and it can reach 0.75 nm/°C when it is used in temperature sensing. This structure can be used in optical integrated circuits, especially high-sensitivity nanosensors.
format article
author Yaxin Yu
Jiangong Cui
Guochang Liu
Rongyu Zhao
Min Zhu
Guojun Zhang
Wendong Zhang
author_facet Yaxin Yu
Jiangong Cui
Guochang Liu
Rongyu Zhao
Min Zhu
Guojun Zhang
Wendong Zhang
author_sort Yaxin Yu
title Research on Fano Resonance Sensing Characteristics Based on Racetrack Resonant Cavity
title_short Research on Fano Resonance Sensing Characteristics Based on Racetrack Resonant Cavity
title_full Research on Fano Resonance Sensing Characteristics Based on Racetrack Resonant Cavity
title_fullStr Research on Fano Resonance Sensing Characteristics Based on Racetrack Resonant Cavity
title_full_unstemmed Research on Fano Resonance Sensing Characteristics Based on Racetrack Resonant Cavity
title_sort research on fano resonance sensing characteristics based on racetrack resonant cavity
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/db67072f19e544558db7f90aace8acf5
work_keys_str_mv AT yaxinyu researchonfanoresonancesensingcharacteristicsbasedonracetrackresonantcavity
AT jiangongcui researchonfanoresonancesensingcharacteristicsbasedonracetrackresonantcavity
AT guochangliu researchonfanoresonancesensingcharacteristicsbasedonracetrackresonantcavity
AT rongyuzhao researchonfanoresonancesensingcharacteristicsbasedonracetrackresonantcavity
AT minzhu researchonfanoresonancesensingcharacteristicsbasedonracetrackresonantcavity
AT guojunzhang researchonfanoresonancesensingcharacteristicsbasedonracetrackresonantcavity
AT wendongzhang researchonfanoresonancesensingcharacteristicsbasedonracetrackresonantcavity
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