Method of manufacturing porous glass deposition body for optical fiber
US11091384B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 24, 2013 |
| Grant date | Aug 17, 2021 |
| Priority date | — |
| Expiry date | Jul 12, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/57
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Provided is a method of manufacturing a porous glass deposition body for optical fiber comprising depositing silica powder on a starting member being raised and rotated by using burners with different deposition positions. With a glass raw material flow rate supplied to a core deposition burner represented by F1 and a total flow rate of glass raw material supplied to a cladding deposition burner adjacent to the core deposition burner represented by F2, during an initial deposition stage occurring before gas conditions reach a stable state, glass raw material is supplied to points at the same longitudinal position of the deposition body such that a glass raw material flow rate ratio F2/F1 is no less than 0.69 and no greater than 1.03.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.