High-efficiency fiber-to-waveguide coupler
US10534136B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2018 |
| Grant date | Jan 14, 2020 |
| Priority date | — |
| Expiry date | Dec 18, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/305
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical coupler comprises a waveguide structure including a first waveguide layer having proximal and distal ends, the first waveguide layer including a first pair of waveguides that extend from the proximal end along a first portion, wherein the first pair of waveguides each widen along a second portion such that the first pair of waveguides merge into a single waveguide. A second waveguide layer is separated from the first waveguide layer, with the second waveguide layer having proximal and distal ends, the second waveguide layer including a second pair of waveguides that extend from the proximal end of the second waveguide layer along a first portion of the second waveguide layer, wherein the second pair of waveguides each narrow along a second portion of the second waveguide layer to separate distal tips. The waveguide structure matches an integrated photonics mode to a fiber mode supported by an optical fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.