Method for making optical device with composite passive and tapered active waveguide regions
US5985685A · kind A · utility
31Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1998 |
| Grant date | Nov 16, 1999 |
| Priority date | — |
| Expiry date | Sep 29, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/34306
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A semiconductor optical device, for example a laser, has a composite optical waveguide including a tapered, MQW active waveguide in optical contact with a substantially planar, passive waveguide. The fundamental optical mode supported by the composite waveguide varies along the length of the composite waveguide so that, in a laser, the laser mode is enlarged and is a better match to single mode optical fibre. A method for making such semiconductor optical devices is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.