DC coupled driver with active termination
US8009709B2 · kind B2 · utility
8Cited by
18References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 27, 2009 |
| Grant date | Aug 30, 2011 |
| Priority date | — |
| Expiry date | Jun 20, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/042
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A DC coupled driver is described for modulating a vertical cavity surface emitting laser at high speeds with active termination. High speed and low total power dissipation is achieved by improving the driver immunity to pulse reflections, which can arise due to impedance mismatch between the driver output impedance and the VCSEL impedance. The rise and fall times of the driver may be adjusted for particular applications. The driver may be fabricated using a choice of bipolar, NMOS and PMOS technologies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.