Freestanding bilayer plasmonic waveguide coupling mechanism for ultranarrow electromagnetic-induced transparency band generation
Abstract Strong electromagnetic coupling among plasmonic nanostructures paves a new route toward efficient manipulation of photons. Particularly, plasmon-waveguide systems exhibit remarkable optical properties by simply tailoring the interaction among elementary elements. In this paper, we propose a...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2021-01-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-81118-6 |
| _version_ | 1819200149934571520 |
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| author | Li Yu Yuzhang Liang Shuwen Chu Huixuan Gao Qiao Wang Wei Peng |
| author_facet | Li Yu Yuzhang Liang Shuwen Chu Huixuan Gao Qiao Wang Wei Peng |
| author_sort | Li Yu |
| collection | DOAJ |
| description | Abstract Strong electromagnetic coupling among plasmonic nanostructures paves a new route toward efficient manipulation of photons. Particularly, plasmon-waveguide systems exhibit remarkable optical properties by simply tailoring the interaction among elementary elements. In this paper, we propose and demonstrate a freestanding bilayer plasmonic-waveguide structure exhibiting an extremely narrow transmission peak with efficiency up to 92%, the linewidth of only 0.14 nm and an excellent out of band rejection. The unexpected optical behavior considering metal loss is consistent with that of electromagnetic induced transparency, arising from the destructive interference of super-radiative nanowire dipolar mode and transversal magnetic waveguide mode. Furthermore, for slow light application, the designed plasmonic-waveguide structure has a high group index of approximately 1.2 × 105 at the maximum of the transmission band. In sensing application, its lowest sensing figure of merit is achieved up to 8500 due to the ultra-narrow linewidth of the transmission band. This work provides a valuable photonics design for developing high performance nano-photonic devices. |
| first_indexed | 2024-12-23T03:27:39Z |
| format | Article |
| id | doaj.art-2901c200f3a745ee850f92c9f657d61a |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-23T03:27:39Z |
| publishDate | 2021-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-2901c200f3a745ee850f92c9f657d61a2022-12-21T18:01:47ZengNature PortfolioScientific Reports2045-23222021-01-011111810.1038/s41598-021-81118-6Freestanding bilayer plasmonic waveguide coupling mechanism for ultranarrow electromagnetic-induced transparency band generationLi Yu0Yuzhang Liang1Shuwen Chu2Huixuan Gao3Qiao Wang4Wei Peng5School of Physics, Dalian University of TechnologySchool of Physics, Dalian University of TechnologySchool of Physics, Dalian University of TechnologySchool of Physics, Dalian University of TechnologySchool of Physics, Dalian University of TechnologySchool of Physics, Dalian University of TechnologyAbstract Strong electromagnetic coupling among plasmonic nanostructures paves a new route toward efficient manipulation of photons. Particularly, plasmon-waveguide systems exhibit remarkable optical properties by simply tailoring the interaction among elementary elements. In this paper, we propose and demonstrate a freestanding bilayer plasmonic-waveguide structure exhibiting an extremely narrow transmission peak with efficiency up to 92%, the linewidth of only 0.14 nm and an excellent out of band rejection. The unexpected optical behavior considering metal loss is consistent with that of electromagnetic induced transparency, arising from the destructive interference of super-radiative nanowire dipolar mode and transversal magnetic waveguide mode. Furthermore, for slow light application, the designed plasmonic-waveguide structure has a high group index of approximately 1.2 × 105 at the maximum of the transmission band. In sensing application, its lowest sensing figure of merit is achieved up to 8500 due to the ultra-narrow linewidth of the transmission band. This work provides a valuable photonics design for developing high performance nano-photonic devices.https://doi.org/10.1038/s41598-021-81118-6 |
| spellingShingle | Li Yu Yuzhang Liang Shuwen Chu Huixuan Gao Qiao Wang Wei Peng Freestanding bilayer plasmonic waveguide coupling mechanism for ultranarrow electromagnetic-induced transparency band generation Scientific Reports |
| title | Freestanding bilayer plasmonic waveguide coupling mechanism for ultranarrow electromagnetic-induced transparency band generation |
| title_full | Freestanding bilayer plasmonic waveguide coupling mechanism for ultranarrow electromagnetic-induced transparency band generation |
| title_fullStr | Freestanding bilayer plasmonic waveguide coupling mechanism for ultranarrow electromagnetic-induced transparency band generation |
| title_full_unstemmed | Freestanding bilayer plasmonic waveguide coupling mechanism for ultranarrow electromagnetic-induced transparency band generation |
| title_short | Freestanding bilayer plasmonic waveguide coupling mechanism for ultranarrow electromagnetic-induced transparency band generation |
| title_sort | freestanding bilayer plasmonic waveguide coupling mechanism for ultranarrow electromagnetic induced transparency band generation |
| url | https://doi.org/10.1038/s41598-021-81118-6 |
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