Optical guide including nanoparticles and manufacturing method for a preform intended to be shaped into such an optical guide
US8000577B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2006 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | Feb 7, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/169
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to an optical fiber comprising a gain medium which is equipped with: a core (22) which is formed from a transparent material and nanoparticles (24) comprising a doping element and at least one element for enhancing the use of said doping element; and an outer cladding (26) which surrounds the core. The invention is characterised in that the doping element is erbium (Er) and in that the enhancing element is selected from among antimony (Sb), bismuth (Bi) and a combination of antimony (Sb) and bismuth (Bi).According to the invention, one such fiber is characterised in that the size of the nanoparticles is variable and is between 1 and 500 nanometers inclusive, and preferably greater than 20 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.