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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MDPI AG
2021
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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) |
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metal-insulator-metal racetrack resonant cavity Fano resonance refractive index sensing temperature sensing Mechanical engineering and machinery TJ1-1570 |
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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 |
_version_ |
1718411289099763712 |