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US 12,754,388 B2Granted
High density, low diameter cable with rollable fiber optic ribbon
AssigneeCorning Research & Development Corporation
InventorsGerhard Merbach, Sebastian Olszewski
Life of this patent
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Abstract
A high density, low diameter optical fiber ribbon cable is provided. The cable includes a polymeric outer cable jacket and a plurality of flexible optical fiber ribbons. The cable includes a relatively high number of optical fibers despite a relatively small outer diameter. The flexible optical fiber ribbons are located within the cable jacket without buffer tubes, central strength elements and/or gel materials.
Claims14
A high density, low diameter optical fiber ribbon cable comprising:
- a polymeric outer cable jacket comprising:
- an inner surface defining an interior cavity;
- an exterior surface defining an outermost surface of the cable;
- and
- a maximum outer dimension of 4 mm to 6 mm;
- at least one extruded polymer anti-buckling element bonded to, embedded within and coextruded with the polymeric outer cable jacket;
- a plurality of optical fiber ribbons surrounded by the polymeric outer cable jacket, each of the optical fiber ribbons comprising a plurality of optical fibers coupled together via a ribbon body, wherein the ribbon body is formed from a flexible material such that the each of the plurality of optical fiber ribbons are reversibly movable from an unrolled position to a rolled position;
- a non-gel, non-liquid water blocking material located within the interior cavity;
- wherein a number of the plurality of optical fiber ribbons is 2 to 16;
- wherein a total number of optical fibers of all of the plurality of optical fiber ribbons is at least 144;
- wherein the interior cavity is free from a gel material;
- and
- wherein the polymeric outer cable jacket has a thickness of 0.5 mm to 0.9 mm.
10 more elements
An optical cable comprising:
- a polymeric outer cable jacket comprising:
- an inner surface defining an interior cavity;
- and
- an exterior surface defining an outermost surface of the cable, wherein a maximum outer dimension of the cable jacket is less than 6 mm;
- at least two extruded polymer anti-buckling elements bonded to, embedded in and coextruded with the polymeric outer cable jacket,
- a plurality of optical fiber ribbons surrounded by the polymeric outer cable jacket, each of the optical fiber ribbons comprising a plurality of optical fibers coupled together via a ribbon body, wherein the ribbon body is formed from a flexible material such that the each of the plurality of optical fiber ribbons are reversibly movable from an unrolled position to a rolled position;
- and
- a non-gel, non-liquid water blocking material located within the interior cavity;
- wherein a number of the plurality of optical fiber ribbons is less than 17;
- wherein a central region of the interior cavity is occupied by at least one of the plurality of optical fiber ribbons;
- wherein a total number of optical fibers of all of the plurality of optical fiber ribbons is at least 144;
- and
- wherein the polymeric outer cable jacket has a thickness of 0.5 mm to 0.9 mm.
10 more elements
Dependencies are inferred from the claim text.