High fiber density ribbon cable
AssigneeCorning Research & Development Corporation
InventorsBradley Jerome Blazer, David Alan Seddon, Rebecca Elizabeth Sistare, Kenneth Darrell Temple, Jr., Brandon Robert Williamson
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Abstract
An optical fiber cable includes a jacket and a plurality of stranded core subunits, each core subunit comprising a flexible sheath and a plurality of ribbons arranged in a ribbon group, wherein each ribbon of the plurality of ribbons comprises a plurality of connected fibers such that 50-70% of the cross-sectional area inside the sheath is occupied by the connected fibers. The flexible sheath may be an extruded PVC material that conforms to the shape of the ribbon stack and keeps all of the ribbons acting as a unitary body during bending.
Claims20
An optical fiber cable comprising:
- a plurality of stranded core subunits, each core subunit comprising:
- a flexible sheath;
- and
- a plurality of ribbons arranged in a ribbon group, wherein each ribbon of the plurality of ribbons comprises a plurality of connected optical fibers such that 50-70% of the cross-sectional area inside the sheath is occupied by the connected optical fibers, wherein further the flexible sheath is drawn tightly about the ribbon group such that the flexible sheath is at least partly conformal to the ribbon group and wherein the sheath is vacuum extruded and conforms to the shape of the ribbon group such that all of the ribbons of the ribbon group act as a unitary body during longitudinal translation of any individual core subunit with respect to any other individual core subunit;
- and
- a jacket surrounding the plurality of stranded core subunits.
An optical fiber cable, comprising:
- a plurality of stranded core subunits, each core subunit comprising:
- a flexible sheath;
- and
- a plurality of ribbons arranged in a ribbon group, wherein each ribbon of the plurality of ribbons comprises a plurality of connected optical fibers such that 50-70% of the cross-sectional area inside the sheath is occupied by the connected optical fibers, wherein further the flexible sheath is drawn tightly about the ribbon group such that the flexible sheath is at least partly conformal to the ribbon group;
- a core water-blocking element, wherein the water-blocking element comprises a non-woven water-swellable tape randomly bunched and placed into interstitial spaces at a center of the stranded core subunits;
- and
- a jacket surrounding the plurality of stranded core subunits.
Dependencies are inferred from the claim text.