Method for manufacturing a preform as well as a method for forming optical fibres from such a preform
US7930903B2 · kind B2 · utility
1Cited by
4References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 25, 2008 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | Sep 25, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/131
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for manufacturing a preform for optical fibers by means of a vapor deposition process, wherein plasma conditions are created and wherein the plasma is moved back and forth along the longitudinal axis of the hollow substrate tube between a reversal point near the supply side and a reversal point near the discharge side of the hollow substrate tube, so that the location where the soot deposition associated with one phase takes place is axially spaced from the location where the soot deposition associated with the other phase(s) takes place.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.