Metallic micro/nano-structure and optical fiber having a micro/nano-structure on the end-facet
US11137353B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2017 |
| Grant date | Oct 5, 2021 |
| Priority date | — |
| Expiry date | Oct 16, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/1226
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided are a metallic micro/nano-structure and an optical fiber having it on the end-facet. The metallic micro/nano-structure comprises of a metallic film and a micro/nano pattern in the metallic film. The micro/nano pattern divides the metallic film into a periodic structure and an embedded defect structure; the defect structure locally breaks the periodicity of the periodic structure; in at least one dimension, the periodic structure has a period T satisfying 0.75λ<T<1.25λ, λ is a wavelength of a surface plasmon at an interface between the metallic film and a medium; and the surface plasmon resonates within the defect structure and its surrounding area. The optical fiber end-facet device takes the advantages of single-mode optical fiber systems, including stable optical transmission, compact systems and flexible configurations. It achieves high efficiency coupling between fiber guided lightwaves and surface plasmon resonance, using a metallic micro/nano-structure which is a distributed feedback resonant cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.