Method for making an optical fiber comprising nanoparticles and preform used in the manufacture of such a fiber
US7657142B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2006 |
| Grant date | Feb 2, 2010 |
| Priority date | — |
| Expiry date | Aug 28, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/25
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention concerns a method for making an optical fiber (18) including the following steps: producing a preform (10) containing nanoparticles provided with an active element including at least one recess (14) proximate at least part of the nanoparticles; fiber drawing of the preform (10) by introducing a non-oxidizing gas in the recess (14), thereby limiting the risks of oxidizing the nanoparticles of the preform (10). The preform (10) designed to the manufacture of an optical fiber (18) by the inventive method comprises nanoparticles provided with an active element in a doped zone (12) and at least one recess (14) proximate the doped zone (12).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.