Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1533290 | Optics Communications | 2016 | 7 Pages |
Abstract
In the past decade there has been outstanding, continuing interest in developing novel structures to engineer and control light-matter interactions in subwavelength dimensions with desired optical characteristics. Herein, we propose a unique plasmonic configuration consisting of a split-ring and a nanosphere in the split section (resembles a single-stone ring). We show that this simple and antisymmetric structure is able to support pronounced antisymmetric Fano resonance at the near-infrared region, while strong hotspots form at the gap space between the split-ring terminals and the nanosphere. The antisymmetric feature of the structure facilitates strong-dependency on the polarization of the incident beam. Having strong sensitivity to the incident polarization angle, we tailored a fast plasmonic Fano-router based on the behavior of Fano resonant mode. This study could help realizing Fano resonance based photonic devices using simple and antisymmetric nanostructures.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Arash Ahmadivand, Raju Sinha, Serkan Kaya, Nezih Pala,