Back to results
US 8,805,142 B2Granted
Optical fiber cables
AssigneeCorning Optical Communications LLC
InventorsScott Allen McDowell, Julian Latelle Greenwood, III, Reginald Roberts, David Alan Seddon
Life of this patent
Estimating the term…
Abstract
Cables have reduced freespace, reduced tube diameters, and reduced strength member diameters. The cables are designed to pass robustness testing such as GR-20 while using smaller amounts of raw materials to produce.
Claims20
A cable, comprising:
- a polymeric cable jacket;
- a polymeric buffer tube within the polymeric cable jacket, the polymeric buffer tube defining an interior thereof;
- a plurality of optical fibers arranged as a ribbon stack and located in the interior defined the polymeric buffer tube;
- and
- strength members at least partially embedded in the polymeric cable jacket, wherein the strength members include a first pair of strength members on one side of the polymeric cable jacket and a second pair of strength members on an opposite side of the polymeric cable jacket,
- wherein the strength members have a strength member area and the ribbon stack has a ribbon stack fiber area, wherein the strength members have a strength member elastic modulus and the ribbon stack has a ribbon stack fiber elastic modulus, wherein a product of the strength member area and the strength member elastic modulus is a strength member EA and a product of the ribbon area and the ribbon stack elastic modulus is a ribbon stack EA, and wherein the ratio of the ribbon stack EA to the strength member EA is at least 0.0015 times the number of optical fibers in the ribbon stack.
3 more elements
A cable, comprising:
- a polymeric cable jacket;
- a polymeric buffer tube within the polymeric cable jacket, the polymeric buffer tube defining an interior thereof, wherein the polymeric buffer tube has an inner diameter;
- a plurality of optical fibers arranged as a ribbon stack and located in the interior defined by the polymeric buffer tube, wherein a freespace of the ribbon stack is less than 1.5 mm;
- and
- strength members at least partially embedded in the polymeric cable jacket, wherein the strength members include a first pair of strength members on one side of the polymeric cable jacket and a second pair of strength members on an opposite side of the polymeric cable jacket, wherein the strength members have a strength member height defined as the distance between the outermost edges of outermost strength members on the one side of the polymeric cable jacket, and wherein the strength member height is within 1.3 mm of the inner diameter of the buffer tube.
2 more elements
Dependencies are inferred from the claim text.