Method of evaluating tuneable lasers
US6658033B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 2, 2002 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Jan 2, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/0014
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of evaluating a tuneable laser and determining suitable hysteresis-free laser operation points. The laser includes two or more tuneable sections in which injected current can be varied, the tuneable sections including at least one reflector section and one phase section. The current injected through the reflector section is varied at different constant currents injected through respective remaining tuneable sections. The laser power output is measured at the front or the rear mirror of the laser while sweeping the reflector current in one direction and then in the opposite direction back to its starting value. The power difference with one and the same reflector current is calculated in the different sweep directions, and those combinations that give rise to a power difference that falls below a predetermined level are detected and stored as hysteresis-free current combinations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.