Grating optical fiber, and optical fiber base material suitable for grating
US6157758A · kind A · utility
7Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1999 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Feb 22, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2203/26
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A grating optical fiber comprises a core, a first clad layer formed around the core, and a second clad layer formed around the first clad. Germanium is doped in the core, while germanium and fluorine are doped in the first clad layer. Gratings are formed on both the core and the first clad layer. The difference between the indexes of refraction between the first and second clad layers is smaller than the difference between the indexes of refraction between the core and the first clad layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.