Left-handed materials and structures based on strong dielectric anisotropy
US7421178B2 · kind B2 · utility
Inventors
Key dates
| Filing date | May 12, 2006 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | May 12, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/1226
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed herein are exemplary embodiments of materials and structures that have a negative refractive index. For example, one exemplary embodiment is a waveguide structure comprising a first waveguide border element having a first substantially planar surface, and a second waveguide border element spaced apart from the first waveguide border element and having a second substantially planar surface. This exemplary embodiment further comprises a core material positioned between the first substantially planar surface and the second substantially planar surface. The core material has a positive in-plane dielectric constant and a negative perpendicular-to-plane dielectric constant. Furthermore, the first waveguide border element, the second waveguide border element, and the core material form a waveguide exhibiting a negative index of refraction for electromagnetic radiation in a frequency range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.