Multicoated tunable optical devices
US12392967B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2023 |
| Grant date | Aug 19, 2025 |
| Priority date | — |
| Expiry date | May 22, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/001
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device may include a dielectric substrate layer with an array of multicoated elongated metal rails extending from the dielectric substrate parallel to one another and spaced from one another to form channels therebetween. The dimensions of the multicoated elongated metal rails and the channels therebetween may be subwavelength with respect to an operational bandwidth. In some examples, each multicoated elongated metal rail is formed with a copper core coated with an optically reflective silver coating followed by a passivation coating. In various examples, a conductive barrier material separates each multicoated elongated metal rail from an underlying dielectric substrate layer. A tunable dielectric material that has a tunable refractive index, such as liquid crystal, is positioned within the channels between adjacent multicoated elongated metal rails.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.