Hybrid semiconductor laser/detectors
US4293826A · kind A · utility
53Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1979 |
| Grant date | Oct 6, 1981 |
| Priority date | — |
| Expiry date | Apr 30, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0683
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A semiconductor injection laser is mounted on a silicon substrate. An optical detector is integral to the substrate and aligned at oblique angles relative to the path of the light from one of the light emitting facets of the laser. The detector may be connected to the current control circuit for the laser to provide a feedback signal which is proportional to the light deflected from the facet. The transversely disposed detector may also function to detect light from another source as part of an optical communication system. The detector may be a Schottky barrier or a p-n junction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.