Method of making fluorine doped optical preform and fiber and resultant articles
US4629485A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1983 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Sep 26, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S65/16
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to a method forming fluorine-doped glass. A coating of glass particles is deposited on the surface of a cylindrical rod of high purity glass. The coated rod is inserted into a furnace which contains a cylindrical muffle formed of high silica content glass. A fluorine-containing atmosphere is flowed through the muffle and over the outer surface of the coating of glass particles and also flows inwardly through the interstices thereof. The temperature within the furnace is sufficiently high to cause fluorine to diffuse into the surfaces of the glass particles and to cause the particles to fuse and form a fluorine-containing dense glass coating on the surface of the rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.