Method of and apparatus for controlling wavelength variable semiconductor laser without preparing a high-precision current table
US6836489B2 · kind B2 · utility
12Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2002 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Feb 21, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0617
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An oscillation state of a semiconductor laser is decided. Injection current to the first and second light reflectors of the semiconductor laser are simultaneously swept based on the oscillation state of the semiconductor laser to obtain current conditions of the injection current to the first and second light reflectors that carry out single-mode oscillation in a target wavelength. The semiconductor laser is drive controlled with the obtained current conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.