Method for producing glass preform for optical fiber
US5330548A · kind A · utility
8Cited by
1References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1992 |
| Grant date | Jul 19, 1994 |
| Priority date | — |
| Expiry date | Jul 17, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B37/01446
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A transparent glass preform for an optical fiber is produced by heating a glass soot preform to remove gas from the soot preform at a temperature at which the soot preform is not vitrified under reduced pressure, and then heating the preform at a temperature at which the preform is vitrified under reduced pressure, whereby the transparent glass preform containing no or little bubbles and having a uniform outer diameter is produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.