Wide band multicore optical fiber
US4300816A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1979 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | Aug 30, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/441
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical waveguide having a plurality of cores disposed in a common cladding provides an optical fiber with both a wide bandwidth, by minimizing modal dispersion, and a large aperture to enhance light-carrying capacity. Each of the cores is sized to support only the lowest order mode, HE.sub.11, and the intercore spacing is selected to achieve a required bandwidth. At the same time, the multiple cores provide a large aperture allowing a relatively large amount of light energy emitted from a noncoherent light source to be coupled into the optical fiber. An array factor A.sub.f is given which provides design criteria for the intercore spacing by providing an accurate calculation of the pulse spreading with a large number of cores beginning with a simple twin core fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.