Method and device for wavelength locking
US6560252B1 · kind B1 · utility
23Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2000 |
| Grant date | May 6, 2003 |
| Priority date | — |
| Expiry date | Apr 12, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0687
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A system for wavelength locking i.e. for maintaining a frequency of an optical signal to within predetermined limits has means for splitting part of the controlled optical signal into at least three sub-beams of which one is a reference beam and two others are provided to an optical element having a periodic output response and to a filter having a monotonic output response. The three detected outputs are analyzed and processed to determine accurately the wavelength of the optical signal and to produce a correcting signal if it is not within the predetermined limits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.