Method of stabilizing the wavelength of lasers and a wavelength monitor
US6549549B2 · kind B2 · utility
2Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2001 |
| Grant date | Apr 15, 2003 |
| Priority date | — |
| Expiry date | Apr 20, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/06837
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of stabilizing the wavelength of lasers comprising a control circuit is proposed, wherein the light of the laser passes through a splitter and the split light passes through a wavelength filter in a first branch, and the light of both branches is in each case received by a photodetector. The photodetector of the first branch can be operated with different gain factors. The wavelength filter has a free spectral region which is greater than the spacing between the individual wavelengths in a wavelength division multiplex.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.