Method of manufacturing optical fiber base material and apparatus of the same
US8701447B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2008 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | May 30, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B37/0146
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing an optical fiber base material includes: forming a porous glass base material by depositing glass particles; providing a vessel which employs a composite tube, the composite tube including a portion formed by jacketing a first quartz glass containing aluminum equal to or less than 0.01 ppm with a second quartz glass containing aluminum equal to or more than 15 ppm; introducing dehydration reaction gas and inert gas into the vessel; heating the jacketed portion in the vessel which contains the dehydration reaction gas and the inert gas; and inserting the porous glass base material into the heated vessel to dehydrate and sinter the porous glass base material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.