Method of making optical fibers having improved core roundness
US4298364A · kind A · utility
5Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1980 |
| Grant date | Nov 3, 1981 |
| Priority date | — |
| Expiry date | Mar 17, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/57
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of producing optical fibers having improved core roundness and core-clad axis concentricity. Prior to the step of forming a layer of core material on the inner surface of a bait tube, the tube is pressurized and heated and shrunk at least 1 mm and thereafter the pressure is increased to inflate the tube until the outside diameter thereof approximates that of the originally provided bait tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.