Low loss optical fiber and method of making the same
US9658395B2 · kind B2 · utility
4Cited by
11References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 13, 2015 |
| Grant date | May 23, 2017 |
| Priority date | — |
| Expiry date | Aug 13, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/57
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The core region of an optical fiber is doped with chlorine in a concentration that allows for the viscosity of the core region to be lowered, approaching the viscosity of the surrounding cladding. An annular interface region is disposed between the core and cladding and contains a concentration of fluorine dopant sufficient to match the viscosity of the core. By including this annular stress accommodation region, the cladding layer can be formed to include the relatively high concentration of fluorine required to provide the desired degree of optical signal confinement (i.e., forming a “low loss” optical fiber).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.