Semiconductor optical device
US7184207B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2005 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Dec 21, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/217
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device comprises a semiconductor structure including first and second ridge waveguides, each waveguide comprising a ridge extending across a surface of the semiconductor structure. The ridge of the first waveguide has a first height above a first region of the surface, and the ridge of the second waveguide has a second, greater, height above a second region of the surface. The semiconductor structure includes a multimode interference (MMI) region situated between the first and second ridge waveguides, which provides a transition between them. At least a part of the MMI region is tapered in width and/or at least a part of the first and/or second ridge waveguide is tapered in width in a direction extending away from the MMI region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.