Fiber optic cable with non-corrugated armor shielding
AssigneeAlcatel
InventorSteven X. Shen
Life of this patent
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Abstract
A fiber optic cable is fabricated with a non-corrugated armor tube which reduces the amount of material needed for the armoring while maintaining adequate cable flexibility. The outer diameter (OD) of the armor tube has a relationship with the thickness (t) of an outer jacket and intervening layers disposed about the tube such that 2t≦OD≦10t. If the tube is formed from a metal tape, sufficiently flexibility is provided as long as the outer diameter is less than 10t. The tube and outer jacket are loosely adhered to maintain flexibility, and the bending strain is maintained at less than 87.5% of the maximum bending strain for the cable.
Claims24
A fiber optic cable comprising:
- an uncorrugated armor tape formed into a cylindrical shape to provide an uncorrugated armoring layer;
- an outer layering disposed about a circumference of the uncorrugated armoring layer,
- wherein the armoring layer has an outer diameter OD and the outer layering has a thickness t, and wherein OD≦10t.
A fiber optic cable comprising:
- an armor cylinder having an outer diameter OD;
- and
- an outer layering having a thickness t disposed about a circumference of the armor cylinder,
- wherein a ratio of OD/2t>20 describes a condition of a maximum bending strain for the fiber optic cable and wherein OD and t are selected such that OD/2t is less than 87.5% of the maximum bending strain for the fiber optic cable.
A fiber optic cable, comprising:
- an uncorrugated armor layer;
- and
- an outer layer disposed about a circumference of the uncorrugated armor layer,
- wherein the armor layer has an outer diameter OD and the outer layer has a thickness t, and wherein OD≦10t.
A fiber optic cable comprising:
- an armor tape formed into a cylindrical shape to provide an armoring layer;
- an outer layering disposed about a circumference of the armoring layer,
- wherein the armoring layer has an outer diameter OD and the outer layering has a thickness t, and wherein OD≦10t.
A fiber optic cable comprising:
- an armor tape formed into a cylindrical shape to provide an armoring layer;
- an outer layering disposed about a circumference of the armoring layer, wherein the armoring layer has an outer diameter OD and the outer layering has a thickness t, and wherein 2t≦OD≦10t.
Dependencies are inferred from the claim text.