US 12,276,854 B2
Flexible indoor/outdoor high-fiber-count cable
George Cornelius Abernathy, Hildebran, NC (US); Mark Hanson Bushnell, Hickory, NC (US); Harold Edward Hudson, II, Conover, NC (US); William Carl Hurley, Hickory, NC (US); Toua Lo, Hickory, NC (US); and William Welch McCollough, Jr., Lincolnton, NC (US)
Assigned to Corning Research & Development Corporation, Corning, NY (US)
Filed by CORNING RESEARCH & DEVELOPMENT CORPORATION, Corning, NY (US)
Filed on Jan. 20, 2023, as Appl. No. 18/099,470.
Application 18/099,470 is a continuation of application No. PCT/US2021/041519, filed on Jul. 14, 2021.
Claims priority of provisional application 63/055,988, filed on Jul. 24, 2020.
Prior Publication US 2023/0152544 A1, May 18, 2023
Int. Cl. G02B 6/44 (2006.01)
CPC G02B 6/44384 (2023.05) 15 Claims
OG exemplary drawing
 
1. An optical fiber cable comprising:
an outer jacket comprising a first inner surface and a first outer surface defining an outermost surface of the optical fiber cable, the first inner surface defining a central bore extending in a longitudinal direction between first and second ends of the outer jacket, wherein the outer jacket has a thickness of at least 2.0 millimeters and is made from a fire retardant polymer material having a PHRR value of 222 kw/m2 when tested in a cone calorimeter measured according to ASTM E1354 with a heat flux of 50 kW/m2,
a plurality of optical fiber carrying subunits located within the central bore, each of the plurality of optical fiber carrying subunits comprising:
a subunit jacket located within the central bore, the subunit jacket comprising a second inner surface and a second outer surface, the second inner surface defining an inner bore extending in a longitudinal direction between first and second ends of the subunit jacket; and
a plurality of optical fibers located within the inner bore and extending in the longitudinal direction between the first and second ends of the subunit jacket, wherein the plurality of optical fibers are configured as ribbons and arranged in a ribbon stack.