Ytterbium-doped optical fiber, fiber laser, and fiber amplifier
US8363313B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2010 |
| Grant date | Jan 29, 2013 |
| Priority date | — |
| Expiry date | Apr 15, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1693
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An ytterbium-doped optical fiber of the present invention includes: a core which contains ytterbium, aluminum, and phosphorus and does not contain germanium; and a cladding which surrounds this core. The ytterbium concentration in the core in terms of ytterbium oxide is 0.09 to 0.68 mole percent. The molar ratio between the phosphorus concentration in the core in terms of diphosphorus pentoxide and the above ytterbium concentration in terms of ytterbium oxide is 3 to 30. The molar ratio between the aluminum concentration in the core in terms of aluminum oxide and the above ytterbium concentration in terms of ytterbium oxide is 3 to 32. The molar ratio between the above aluminum concentration in terms of aluminum oxide and the above phosphorus concentration in terms of diphosphorus pentoxide is 1 to 2.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.