Method of preparing preforms for optical fibers
US4680046A · kind A · utility
20Cited by
5References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1985 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | Oct 2, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S65/901
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of preparing preforms for optical fibers is provided. The method includes preparation of a first sol solution of a silicon alkoxide hydrolyzed with an acid and ultrafine particle silica, placement of the first sol solution into a container, and gelation of the first sol solution while the container is being rotated to yield a wet gel having a center hole. A second sol solution having a different composition than the first sol solution is prepared and used to fill the center hole in the wet gel. The second sol solution is then gelled to a wet gel composite and the composite is dried and sintered to yield the preform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.