Heterostructure devices including tapered optical couplers
US3978426A · kind A · utility
38Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1975 |
| Grant date | Aug 31, 1976 |
| Priority date | — |
| Expiry date | Mar 11, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S117/918
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
Described is a double heterostructure junction laser in which the active region tapers to zero thickness within the structure, causing light to couple into an adjacent, underlying passive waveguide layer. Also described is a laser device in which the passive waveguide layer terminates in a region of increased thickness adjacent a laser output face. In addition, LPE and MBE techniques for fabricating the tapers are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.