Abstract
The downscaling of conventional RF transmission lines methodologies to subwavelength plasmonic circuits is discussed and demonstrated for a λ/4 transformer impedance matching. The nano-size transformer, matching between 0.5μm and 50nm wide plasmonic transmission lines, enhances the coupling efficiency by more than 285% compared to the direct ("end fire") coupling - i.e. harvesting more than 86% of total incident power. The influence of the transverse resonances induced by the metal claddings of the input transmission line on the light harvesting is discussed as well.
| Original language | English |
|---|---|
| Pages (from-to) | 6762-6767 |
| Number of pages | 6 |
| Journal | Optics Express |
| Volume | 15 |
| Issue number | 11 |
| DOIs | |
| State | Published - 28 May 2007 |
| Externally published | Yes |