Cladding-pumped optical fibre and method for making same
US6718106B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2002 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | Feb 28, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/094003
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention concerns an optical fiber pumped through the cladding, including:a core having an optical index n1, around the core, a first cladding having an index n2 lower than n1, andaround the first cladding, a second cladding having an index n3 lower than n2, characterized in that the interface between the first cladding and the second cladding has a substantially polygonal cross section.The invention also concerns a method of fabricating an optical fiber pumped through the cladding, characterized in that it consists in executing the following steps:placing around a central optical preform including a core having an index n1 surrounded by a first cladding having an index n2 lower than n1, a plurality of rods having an index n3 lower than n2, anddrawing the optical preform and the rods in a vacuum to obtain an optical fiber including a core and two claddings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.