Multi-mode Hybrid Plasmonic Waveguides with Enhanced Confinement and Propagation
| Autor: | Daniel Nikolov, John Colanduoni, Huizhong Xu |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Aperture Subwavelength aperture Hybrid waveguide Biophysics Physics::Optics Extraordinary optical transmission Surface plasmons 02 engineering and technology Dielectric 7. Clean energy 01 natural sciences Biochemistry Article law.invention 010309 optics Optics law 0103 physical sciences business.industry Extraordinary transmission Surface plasmon Mode (statistics) 021001 nanoscience & nanotechnology Transmission (telecommunications) Optoelectronics 0210 nano-technology business Waveguide Refractive index Biotechnology |
| Zdroj: | Plasmonics (Norwell, Mass.) |
| ISSN: | 1557-1963 1557-1955 |
| DOI: | 10.1007/s11468-015-0107-z |
| Popis: | A hybrid waveguide, which consists of a dielectric wire above a dielectric-metal interface, has been previously proposed to achieve high confinement with low loss. By exciting this geometry with an aperture in the metal that takes advantage of the extraordinary transmission through subwavelength apertures, it is possible to strongly couple to multiple modes. The real part of the fundamental mode is in fact capable of exceeding the index of refraction of all the materials used while maintaining a manageable imaginary part, as a result of appropriate choice of materials for the dielectric wire and the metal. In addition, as the confinement of the second mode is comparable to that of the fundamental mode but has a much longer propagation length, this mode can be utilized in light-guiding applications where enhanced confinement and propagation is desired. |
| Databáze: | OpenAIRE |
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