Apparatus and method for making optical filament preform
US4233045A · kind A · utility
20Cited by
3References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1978 |
| Grant date | Nov 11, 1980 |
| Priority date | — |
| Expiry date | Nov 27, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2207/87
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A glass optical waveguide filament preform is prepared by chemical reaction of vapor ingredients within a glass bait tube. A reactant feed tube extends into one end of the bait tube and terminates just short of the hot zone where reaction occurs. The end of the feed tube traverses the bait tube along with the burner which generates the hot zone. Reactants flow radially from slots in the end of the wall of the feed tube and combine with a flushing gas to form a mixture which flows in a spiral path through the hot zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.