Apparatus for producing an optical fiber porous glass preform
US6012305A · kind A · utility
9Cited by
8References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1998 |
| Grant date | Jan 11, 2000 |
| Priority date | — |
| Expiry date | Mar 6, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2207/70
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for producing an optical fiber porous glass preform using the VAD method which can stably produce a high quality optical fiber porous glass preform, wherein a target bar is only rotatably supported by a chuck and is not pulled upward, a lower tip of a soot body is detected by a laser and a photodetector, and a core burner and a cladding burner is lowered in response to the result detected. A tip position detecting drive and burners are synchronizingly lowered while the deposit of porous glass grows at the lower portion of the target bar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.