Spectral filter comprising at least two coupled Fabry-Perot structures
US11326947B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2019 |
| Grant date | May 10, 2022 |
| Priority date | — |
| Expiry date | Jun 25, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/2826
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a spectral filter including a plurality of Fabry-Perot structures which are collectively carried by a support, and coupled together so as to produce a coupling resonance that is distinct from individual resonances of each of the Fabry-Perot structures. The coupling resonance may have a higher quality factor than the quality factors of the individual resonances. Each Fabry-Perot structure includes two portions of metal surfaces which are parallel to a face of the substrate, so that electromagnetic radiation wave components propagating within each Fabry-Perot structure, and which contribute to the coupling resonance, have a direction of propagation that is parallel to the face of the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.