Optical waveguide structures
US6741782B2 · kind B2 · utility
27Cited by
2References
98Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 21, 2002 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | Oct 2, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device comprises a waveguide structure formed by a strip (100) of a material having a relatively high free charge carrier density surrounded by a material having a relatively low free charge carrier density. The strip has finite width (W) and thickness (t) of the same order with dimensions such that optical radiation having a wavelength in a predetermined range couples to the strip and propagates along the length of the strip as a plasmon-polariton wave. Preferably the width and thickness are substantially equal and less than about 300 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.