Optical fiber preform, method for manufacturing thereof, and optical fiber obtained by drawing thereof
US7752869B2 · kind B2 · utility
6Cited by
11References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 2005 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Jul 23, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/57
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for manufacturing a preform having a core and a multilayer clad, includes covering a circumference of a rod including at least the core and an inner clad layer with a first tube including at least a high viscosity clad layer, and unifying the rod and the first tube by heating and contracting the first tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.