Long-range air-host plasmonic propagation with subwavelength confinement
Confining light at a subwavelength scale is important for building ultracompact opto-electronic networks. Plasmonic waveguides are good candidate devices for this purpose. However, the oscillation of electrons relating to surface plasmon polaritons causes energy dissipation, which limits the propaga...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2024-04-01
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| Series: | Frontiers in Physics |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fphy.2024.1386585/full |
| _version_ | 1827292767101911040 |
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| author | Kun Yue Xialian Feng Jiaxin Yu Fuxing Gu |
| author_facet | Kun Yue Xialian Feng Jiaxin Yu Fuxing Gu |
| author_sort | Kun Yue |
| collection | DOAJ |
| description | Confining light at a subwavelength scale is important for building ultracompact opto-electronic networks. Plasmonic waveguides are good candidate devices for this purpose. However, the oscillation of electrons relating to surface plasmon polaritons causes energy dissipation, which limits the propagation length and thus reduces the waveguide performance. Here, we design a low-loss plasmonic waveguide composed of a nanowire dimer structure on a metal substrate, in which the dominant modes are localized within the air gap between the nanowires and referred to as air-host plasmonic modes. The use of air instead of dielectric materials as the host medium can reduce ohmic loss and avoid the dispersion effect of dielectric. When the constructed nanowires have a diameter less than 100 nm, the air-host mode has subwavelength-scale confinement and a propagation length of ∼100 μm, which has broad application prospects for the construction of ultracompact plasmonic devices. |
| first_indexed | 2024-04-24T13:11:26Z |
| format | Article |
| id | doaj.art-2fad9ace246248dbb2a0ef726fd019a2 |
| institution | Directory Open Access Journal |
| issn | 2296-424X |
| language | English |
| last_indexed | 2024-04-24T13:11:26Z |
| publishDate | 2024-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physics |
| spelling | doaj.art-2fad9ace246248dbb2a0ef726fd019a22024-04-05T04:17:29ZengFrontiers Media S.A.Frontiers in Physics2296-424X2024-04-011210.3389/fphy.2024.13865851386585Long-range air-host plasmonic propagation with subwavelength confinementKun YueXialian FengJiaxin YuFuxing GuConfining light at a subwavelength scale is important for building ultracompact opto-electronic networks. Plasmonic waveguides are good candidate devices for this purpose. However, the oscillation of electrons relating to surface plasmon polaritons causes energy dissipation, which limits the propagation length and thus reduces the waveguide performance. Here, we design a low-loss plasmonic waveguide composed of a nanowire dimer structure on a metal substrate, in which the dominant modes are localized within the air gap between the nanowires and referred to as air-host plasmonic modes. The use of air instead of dielectric materials as the host medium can reduce ohmic loss and avoid the dispersion effect of dielectric. When the constructed nanowires have a diameter less than 100 nm, the air-host mode has subwavelength-scale confinement and a propagation length of ∼100 μm, which has broad application prospects for the construction of ultracompact plasmonic devices.https://www.frontiersin.org/articles/10.3389/fphy.2024.1386585/fullplasmonic waveguidenanowire dimerohmic loss reductionlight confinementairhost plasmonic mode |
| spellingShingle | Kun Yue Xialian Feng Jiaxin Yu Fuxing Gu Long-range air-host plasmonic propagation with subwavelength confinement Frontiers in Physics plasmonic waveguide nanowire dimer ohmic loss reduction light confinement airhost plasmonic mode |
| title | Long-range air-host plasmonic propagation with subwavelength confinement |
| title_full | Long-range air-host plasmonic propagation with subwavelength confinement |
| title_fullStr | Long-range air-host plasmonic propagation with subwavelength confinement |
| title_full_unstemmed | Long-range air-host plasmonic propagation with subwavelength confinement |
| title_short | Long-range air-host plasmonic propagation with subwavelength confinement |
| title_sort | long range air host plasmonic propagation with subwavelength confinement |
| topic | plasmonic waveguide nanowire dimer ohmic loss reduction light confinement airhost plasmonic mode |
| url | https://www.frontiersin.org/articles/10.3389/fphy.2024.1386585/full |
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