Optical fiber and optical transmission medium
US7502540B2 · kind B2 · utility
4Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2006 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | Sep 13, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02352
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical fiber includes a core region and a cladding region. The cladding region includes a first cladding region on an outer circumference of the core region, the first cladding region including a main-medium region and a sub-medium region having a refractive index lower than a refractive index of the main-medium region. The sub-medium region includes inner sub-medium regions arranged at four folds rotationally symmetric centering on the core region, and outer sub-medium regions arranged at four folds rotationally symmetric centering on the core region on an outer side of the inner sub-medium regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.