Semiconductor laser drive device, semiconductor laser drive method, light transmission device, optical wiring module, and electronic device
US8457499B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2008 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | May 23, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/183
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A semiconductor laser drive apparatus comprises a bias current setting section (232) which sets a bias current value on the basis of the drive temperature so that the temperature characteristic of the bias current value with respect to the drive temperature may be a linear function having a slope except zero and a drive current setting section (233) for setting the drive current value on the basis of the drive temperature so that the temperature characteristic of the drive current value with respect to the drive temperature may be a function having a slope except zero. The temperature characteristic of the bias current and that of the drive current are functions different from each other. With this, low cost, space-saving, and power-saving of a semiconductor laser are achieved, and a semiconductor laser drive apparatus enabling a good transmission characteristic on the reception side and a high optical output over the whole drive temperature range when driving the semiconductor laser can be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.