Excitations of Multiple Fano Resonances Based on Permittivity-Asymmetric Dielectric Meta-Surfaces for Nano-Sensors
We have designed an all-dielectric device based on permittivity-asymmetric rectangular blocks on meta-surfaces, yielding multiple Fano resonances with high sensitivity and high figure of merit (FOM) in the near-infrared regime. By introducing different materials to break the permittivity-symmetry, t...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9689986/ |
| _version_ | 1818160975108374528 |
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| author | Yusen Wang Shilin Yu Ziang Gao Shaozhe Song Hongyun Li Tonggang Zhao Zonghai Hu |
| author_facet | Yusen Wang Shilin Yu Ziang Gao Shaozhe Song Hongyun Li Tonggang Zhao Zonghai Hu |
| author_sort | Yusen Wang |
| collection | DOAJ |
| description | We have designed an all-dielectric device based on permittivity-asymmetric rectangular blocks on meta-surfaces, yielding multiple Fano resonances with high sensitivity and high figure of merit (FOM) in the near-infrared regime. By introducing different materials to break the permittivity-symmetry, three sharp Fano peaks are generated with high Q-factors arising from the interference between the sub-radiant modes and the magnetic dipole resonance modes. Combining the field distributions and the multipole decomposition in Cartesian coordinates, the resonance modes are analyzed to be magnetic quadrupoles (MQs) and magnetic dipoles (MDs). Furthermore, the dependence on materials and geometric parameters has been studied. The maximal sensitivity, FOM and Q-factor reach 394 nm/RIU, 4925 and 14437, respectively. This proposed structure provides a good alternative to geometry-asymmetric meta-surface structures and may be used for multichannel sensing, nonlinear optical devices, and laser. |
| first_indexed | 2024-12-11T16:10:25Z |
| format | Article |
| id | doaj.art-adf7386ed1714d56a1a79c422c50d0d0 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-12-11T16:10:25Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-adf7386ed1714d56a1a79c422c50d0d02022-12-22T00:59:05ZengIEEEIEEE Photonics Journal1943-06552022-01-011411710.1109/JPHOT.2022.31443999689986Excitations of Multiple Fano Resonances Based on Permittivity-Asymmetric Dielectric Meta-Surfaces for Nano-SensorsYusen Wang0https://orcid.org/0000-0002-0714-3982Shilin Yu1https://orcid.org/0000-0002-4940-5274Ziang Gao2Shaozhe Song3Hongyun Li4Tonggang Zhao5https://orcid.org/0000-0002-4880-0176Zonghai Hu6https://orcid.org/0000-0002-8362-6353School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaSchool of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaSchool of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaSchool of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaState Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing, ChinaSchool of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaSchool of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, ChinaWe have designed an all-dielectric device based on permittivity-asymmetric rectangular blocks on meta-surfaces, yielding multiple Fano resonances with high sensitivity and high figure of merit (FOM) in the near-infrared regime. By introducing different materials to break the permittivity-symmetry, three sharp Fano peaks are generated with high Q-factors arising from the interference between the sub-radiant modes and the magnetic dipole resonance modes. Combining the field distributions and the multipole decomposition in Cartesian coordinates, the resonance modes are analyzed to be magnetic quadrupoles (MQs) and magnetic dipoles (MDs). Furthermore, the dependence on materials and geometric parameters has been studied. The maximal sensitivity, FOM and Q-factor reach 394 nm/RIU, 4925 and 14437, respectively. This proposed structure provides a good alternative to geometry-asymmetric meta-surface structures and may be used for multichannel sensing, nonlinear optical devices, and laser.https://ieeexplore.ieee.org/document/9689986/Permittivity-asymmetryBIChigh sensitivitymeta-surfaceFano resonancenano-sensor |
| spellingShingle | Yusen Wang Shilin Yu Ziang Gao Shaozhe Song Hongyun Li Tonggang Zhao Zonghai Hu Excitations of Multiple Fano Resonances Based on Permittivity-Asymmetric Dielectric Meta-Surfaces for Nano-Sensors IEEE Photonics Journal Permittivity-asymmetry BIC high sensitivity meta-surface Fano resonance nano-sensor |
| title | Excitations of Multiple Fano Resonances Based on Permittivity-Asymmetric Dielectric Meta-Surfaces for Nano-Sensors |
| title_full | Excitations of Multiple Fano Resonances Based on Permittivity-Asymmetric Dielectric Meta-Surfaces for Nano-Sensors |
| title_fullStr | Excitations of Multiple Fano Resonances Based on Permittivity-Asymmetric Dielectric Meta-Surfaces for Nano-Sensors |
| title_full_unstemmed | Excitations of Multiple Fano Resonances Based on Permittivity-Asymmetric Dielectric Meta-Surfaces for Nano-Sensors |
| title_short | Excitations of Multiple Fano Resonances Based on Permittivity-Asymmetric Dielectric Meta-Surfaces for Nano-Sensors |
| title_sort | excitations of multiple fano resonances based on permittivity asymmetric dielectric meta surfaces for nano sensors |
| topic | Permittivity-asymmetry BIC high sensitivity meta-surface Fano resonance nano-sensor |
| url | https://ieeexplore.ieee.org/document/9689986/ |
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