Rollable optical fiber ribbon with low attenuation, large mode field diameter optical fiber and cable
AssigneeCorning Research & Development Corporation
InventorsDana Craig Bookbinder, Ming-Jun Li, Pushkar Tandon
Life of this patent
Estimating the term…
Abstract
A rollable optical fiber ribbon utilizing low attenuation, bend insensitive fibers and cables incorporating such rollable ribbons are provided. The optical fibers are supported by a ribbon body, and the ribbon body is formed from a flexible material such that the optical fibers are reversibly movable from an unrolled position to a rolled position. The optical fibers have a large mode filed diameter, such as ≥9 microns at 1310 nm facilitating low attenuation splicing/connectorization. The optical fibers are also highly bend insensitive, such as having a macrobend loss of ≤0.5 dB/turn at 1550 nm for a mandrel diameter of 15 mm.
Claims16
An optical fiber cable comprising:
- a plurality of rollable optical fiber ribbons, each optical fiber ribbon comprising:
- a plurality of optical fibers, wherein each optical fiber comprises:
- a core;
- a cladding surrounding the core;
- at least one coating surrounding the cladding such that the cladding is disposed between the core and the at least one coating;
- an outer diameter ≤210 microns as measured at an outer surface of the at least one coating;
- a mode field diameter of ≥9 microns at 1310 nm;
- and
- a macrobend loss of ≤0.5 dB/turn at 1550 nm for a mandrel diameter of 15 mm;
- and
- a cable jacket surrounding the plurality of optical fiber ribbons defining an exterior surface of the cable and a cable core,
- wherein a core fiber density is greater than 7.12 fibers per square millimeter as calculated by the total number of optical fibers divided by an area of the cable core as determined from a minimum cable core diameter.
Dependencies are inferred from the claim text.