Method of making optical waveguide fiber preform starter tubes
US4412853A · kind A · utility
15Cited by
12References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1981 |
| Grant date | Nov 1, 1983 |
| Priority date | — |
| Expiry date | Jun 29, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B37/01861
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A glass tube is formed having a mean cross-sectional tube wall area less than a preselected mean cross-sectional area. Additional glass differing in composition from that of the glass tube, but having an index of refraction substantially equal to that of the glass tube, is then fused onto a surface of the tube by vapor deposition, outside vapor-phase oxidation or outside vapor-phase axial deposition until the tube wall obtains the preselected mean cross-sectional area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.