Optical fibre preform manufacture
US4518407A · kind A · utility
7Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1980 |
| Grant date | May 21, 1985 |
| Priority date | — |
| Expiry date | Feb 25, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S65/16
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A rod of silica 14 is inserted into a substrate tube 10 whose bore is lined with a layer 11 of material having a refractive index less than that of silica. This layer 11 is itself covered with a layer 12 of silica. The assembly of the rod and tube is drawn into fibre, or its components are fused together to form a solid cross-section optical fibre preform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.