Alcatel

Draka Comteq B.v.

Kabel Rheydt Aktiengesellschaft

Alexander Weiss

Klaus Nothofer

Peter Lausch

Stefan Richter

Peter Zamzow

Helmut Haag

Wolfgang Liese

Peter Rohrmann

Marta Garcia

George Hog

Bernd Menze

The invention relates to optical fiber cables and, more specifically, to an optical fiber cable especially suited for blown installation or pushing installation in microducts of small diameter. An exemplary microcable for installation in small microducts has an outer sheath as buffer tube that holds a plurality of optical fibers without a layer of strength elements stranded around the outer sheath, which is made of one single thermoplastic material.

Optical fiber cable suited for blown installation or pushing installation in microducts of small diameter

An optical cable for routing in sewers, with a cable core and a metallic cladding ( ) encircling the cable core in which the cable core is composed of several stranding elements ( ) which have a sheath ( ) in which several optical waveguides ( ) are accommodated, wherein each stranding element ( ) comprises a bundle of plural optical waveguides ( ) running parallel to each other and unstranded or stranded with large pitch, each bundle is encircled by a sheath ( ) which fits closely around the bundle, and plural such stranding elements ( ) are stranded to the cable core with the cable core being built up exclusively from such bundles.

Optical cable for routing in sewers

A communications cable network, in a duct or tube system used primarily for other purposes, wherein the communications cables are mounted on the walls of the duct or tube system. The communications cable (,), is made of a core (,) and a sheath (,). The core (,) of the communications cable (,) is extremely flexible and the sheath (,) is sufficiently rigid that cable sag is less than 20 mm for a 2000-mm distance between fastenings. The sheath (,) is removed from the core (,) in the area of the shafts (,) of the duct or pipe system (,).

Communication cable network in a duct or tube system used primarily for other purposes

An optical cable with one or more fiber optics conductors (,) that are located in a strand (,) with a polypropylene envelope or in a polypropylene support element (,), as well as with an outer jacket (,). The polypropylene contains a fire-retardant additive, the basis of which is an ammonium polyphosphate, and the jacket (,) is made of a halogen-free, flame-resistant material.

Flame-resistant optical cable

An elongated optical element is proposed with a core (2, 11), with several optical transmission units extending in the longitudinal direction of the element and affixed to the surface of the core (2, 11) with a layer (3,13) of a hot-melt adhesive, the layer (3,13) extending through cavities (7) disposed between the surface (6,14) of the core (2,11) and the transmission units, wherein the hot-melt adhesive can swell in water and wherein the layer thickness of the hot-melt adhesive is less than the diameter of the transmission units. Also described is a method for fabricating the element.

Optical element with conglutinated components

A radiating high frequency cable with a tubular inner conductor and a concentric tubular outer conductor. The inner conductor and the outer conductor are spaced apart by an insulating material. The cable includes at least one optical fiber element within the inner conductor.

Growing community of inventors

Monchengladbach, Germany

Alexander Weiss