Method of manufacturing an optical fiber preform having doped cladding
US5090979A · kind A · utility
14Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1990 |
| Grant date | Feb 25, 1992 |
| Priority date | — |
| Expiry date | Aug 2, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S65/16
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
According to the present invention, a preform (7) for an optical fiber is made from a tube having a substrate layer (16) of fluorine-doped silica and a support layer (18) of non-doped silica. A cladding layer (8) of fluorine-doped silica and a core layer (10) of non-doped silica are formed on the inside surface of the tube by chemical vapor phase deposition. The optical fiber is subsequently obtained by collapsing the tube and drawing it. The invention is applicable to fabricating optical fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.