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Adjustable subwavelength localization in a hybrid plasmonic waveguide
S Belan1, S Vergeles, P Vorobev
1Landau Institute for Theoretical Physics RAS, Kosygina 2, 119334, Moscow, Russia. sergb27@yandex.ru
Optics Express
|April 3, 2013
Summary
This study explores hybrid plasmonic waveguides for subwavelength light guiding. A specific design achieves arbitrary mode sizes by controlling the gap width between a dielectric nanofiber and a metal surface.
Area of Science:
- Photonics
- Nanotechnology
- Materials Science
Background:
- Hybrid plasmonic waveguides offer potential for long-range subwavelength light guiding.
- Existing designs face limitations in controlling mode size for specific applications.
Purpose of the Study:
- To analyze and numerically demonstrate a novel hybrid plasmonic waveguide design.
- To achieve arbitrary subwavelength mode size control through specific material and geometric parameters.
Main Methods:
- Qualitative analysis based on a conductor-gap-dielectric model.
- Numerical solution using mode expansion and boundary condition matching.
Main Results:
- Demonstrated advantages of the waveguide design when the dielectric constant of the cylinder exceeds the metal's dielectric constant.
- Showcased arbitrary subwavelength mode size control by adjusting the gap width.
Conclusions:
- The proposed hybrid plasmonic waveguide design enables precise control over subwavelength mode sizes.
- This offers a promising platform for advanced photonic integrated circuits and devices.
