Multi-core fiber
US9081129B2 · kind B2 · utility
11Cited by
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14Claims
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Key dates
| Filing date | Jul 17, 2014 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Jul 17, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/036
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A multi-core fiber includes an even number of six or more of cores and a clad that surrounds the outer circumferential surfaces of the cores. The cores are formed of two types of cores and in which an effective refractive index difference in a fundamental mode is 0.002 or less in a predetermined range or more that the effective refractive index difference in the fundamental mode is varied according to a core pitch. Two types of the cores are alternately and annularly disposed at regular spacings. A difference in the mode field diameter of light propagating through the cores is 1 μm or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.