Multi-core optical fiber and method for manufacturing multi-core optical fiber
US11391603B2 · kind B2 · utility
1Cited by
6References
15Claims
0Family size
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Key dates
| Filing date | Jul 17, 2019 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | Jul 22, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2203/20
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A multi-core optical fiber includes a central core disposed at the center of a cladding; and outer cores helically wound around the central core. The following Formula (1) is satisfied: where dave is an average of a distance d between the central core and the outer cores, fw is the number of helical turns of the outer cores per unit length, ne1 is an effective refractive index of the central core, and ne2ave is an average of effective refractive indices of the outer cores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.