Doped optical fiber laser amplifier
US4959837A · kind A · utility
39Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1989 |
| Grant date | Sep 25, 1990 |
| Priority date | — |
| Expiry date | Nov 13, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/06729
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An erbium-doped fiber laser amplifier (1), characterized by the fact that said fiber (3) is doped to a concentration lying in the range 5 ppm to 50 ppm, that the length of said fiber lies in the range 250 m to 30 m depending on the selected concentration of doping, and that the radial position of the doped zone substantially coincides with the energy maximum of the set of propagation modes in said fiber at the pumping wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.