Low noise surface emitting laser for multimode optical link applications
US5659568A · kind A · utility
19Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 1995 |
| Grant date | Aug 19, 1997 |
| Priority date | — |
| Expiry date | May 23, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S2301/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a low noise multimode VCSEL that can be used to transmit data reliably on multimode optical media at data rates up to and exceeding 1 gigabit per second with bit error rates less than 1.times.10.sup.-9 errors/bit. In contrast to conventional multimode lasers where optimal mirror reflectivity is designed for maximum power output, in the present invention mirror reflectivity is increased to a point where the output power is less than half the maximum output power. Preferably, the reflectivity of the first and second mirror regions of the multimode laser is high, typically greater than 99.5%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.