S-shaped curved optical waveguide and optical device
US7444050B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2006 |
| Grant date | Oct 28, 2008 |
| Priority date | — |
| Expiry date | Oct 19, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/1215
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a curved optical waveguide which is free of any axis-deviation structure in the middle of the waveguide and which has a sigmoidal core shape, wherein the curvature thereof at one end is zero and the curvature thereof at the other end is finite (>0) and the use of such a curved optical waveguide permits the reduction of optical loss at the connected portions to the lowest possible level even when it is applied to, for instance, an optical splitter or a directional coupler and the curved optical waveguide of the present invention can provide an optical waveguide which never requires the use of any offset.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.