Method of glazing an optical fiber preform with a plasma of reduced power
US7121120B2 · kind B2 · utility
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15References
10Claims
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Assignee
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Key dates
| Filing date | May 5, 2003 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Jul 14, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/30
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of fabricating an optical fiber preform includes an operation of glazing the outside surface of the preform using inductive heating, of the plasma torch type, for localized heating of the preform. A flow of gas between the plasma and the preform in the area of the outside face of the preform on which the plasma impinges reduces the power of the plasma in this outside surface area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.