Photonic crystal exhibiting negative refraction without requiring a negative effective index
US7339539B2 · kind B2 · utility
32Cited by
9References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2003 |
| Grant date | Mar 4, 2008 |
| Priority date | — |
| Expiry date | Apr 9, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q19/06
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A periodic electromagnetic medium is disclosed that includes a surface that provides an interface with an ambient medium and a periodic structure that provides negative refraction within the medium of an incident electromagnetic field incident on the surface. In various embodiments the incident electromagnetic field is within a range of frequencies, the medium may include dielectric or metallic material, and has either a positive or negative effective index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.