Method for manufacturing an optical fiber preform
US7702204B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2007 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | Mar 20, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0365
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for manufacturing a final optical fiber preform via overcladding of a primary preform having a cross section area is disclosed. The method includes at least one manufacturing step of the primary preform by deposit of an inner cladding and of a central core inside a tube of fluorine-doped silica, the tube being chosen such that it has a cross section area that is maximally about 15% less than the cross section area of the primary preform. With the method of the invention it is possible to manufacture a preform of large capacity at reduced cost which allows the drawing of an optical fiber having reduced transmission losses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.