VCSELs (vertical-cavity surface emitting lasers) and VCSEL-based devices
US5778018A · kind A · utility
89Cited by
6References
5Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 15, 1995 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Sep 15, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/166
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In order to control polarization direction of laser light emitted by a vertical cavity surface emitting laser (VCSEL), cross-sectional dimension of the p-DBR is so limited as to permit only a single fundamental transverse mode in a waveguide composed by the p-DBR. Some VCSEL-based devices are developed using arrays of VCSELs in which each VCSEL has a controlled direction of polarization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.