Optical fiber and method of making the same
US6697559B2 · kind B2 · utility
1Cited by
3References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 28, 2003 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Jan 28, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0286
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical fiber is composed of silica glass and comprises a center core region doped with F element, a ring core region doped with GeO2, and an inner cladding region doped with F element; wherein a buffer layer composed of undoped SiO2 or SiO2 doped with one or both of P and Cl or a concentration gradient region in which GeO2 concentration radially decreases toward the boundary is provided between the center core region and the ring core region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.