Patent ID: 7643713
Filing Date: 2010-01-05
Classification: G02B,H01B

Abstract:
1. A composite cable to be laid by being drawn or blown into a cable tube, comprising: at least two insulated copper wires stranded with one another, at least one single-fiber optical waveguide, and a cable sheath, wherein said insulation of said copper wires includes a foamed polymer inner layer and an unfoamed polymer outer layer, and said at least one single-fiber optical waveguide is arranged in the stranding gaps of said insulated copper wires which are stranded with one another, wherein the wires and said at least one waveguide are surrounded by a first layer of non-hygroscopic foils, at least one layer of an aluminum foil arranged on said first layer of non-hygroscopic foils, and a second layer of non-hygroscopic foils lying on said layer of said aluminum foil, and reinforcing elements made from a material having a high tensile strength embedded in the sheath, wherein said layers are surrounded by the sheath.