Method of characterising a tuneable laser and determining actual wavelength
US6587485B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 2, 2002 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | Jan 2, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/1035
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of evaluating a tuneable laser and determining suitable laser operation points, wherein the laser includes one or more tuneable sections in which injected current can be varied. A portion of the laser light output is divided into parallel paths, one part of which passes through a periodic filter, a second part of which is unfiltered, and a third part of which passes through a monotonic filter. The light power outputs from the respective paths are compared as sweep currents are injected into the tuning sections of the laser. When the ratios of the power outputs are within a predetermined range the tuning current combinations for those operating points are stored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.