Apparatus for manufacturing an optical fibre with plasma activated deposition in a tube
US4090055A · kind A · utility
29Cited by
10References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 14, 1977 |
| Grant date | May 16, 1978 |
| Priority date | — |
| Expiry date | Feb 14, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S65/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An optical fibre is manufactured by forming a layer of fused silica, which may or may not be doped, on the inner wall of a fused silica tube by producing a plasma in the reactant gases flowing through the tube. By this means a higher temperature can be maintained inside the tube than at the tubes outer wall. The plasma is produced at substantially atmospheric pressure. Cooling gas is passed along the outer wall of the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.