Few mode optical fibers for mode division multiplexing
US8693834B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2012 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Oct 9, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/03627
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A few mode optical fiber suitable for use in a mode division multiplexing (MDM) optical transmission system is disclosed. The optical fiber has a graded-index core with a radius R1 in the range from 8 μm to 14 μm, an alpha value greater than or equal to about 2.3 and less than about 2.7 at a wavelength of 1550 nm, and a maximum relative refractive index Δ1MAX from about 0.3% to about 0.6% relative to the cladding. The optical fiber also has an effective area greater than about 90 μm2 and less than about 160 μm2. The core and cladding support only the LP01 and LP11 modes at wavelengths greater than 1500 nm. The cladding has a maximum relative refractive index Δ4MAX such that Δ1MAX>Δ4MAX, and the differential group delay between the LP01 and LP11 modes is less than about 0.5 ns/km at a wavelength of 1550 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.