Siemens Aktiengesellschaft

Ulrich Oestreich

Ernst Mayr

Gernot Schoeber

Guenter Zeidler

Reiner Schneider

Wolfgang Schrey

Peter Dotzer

Guenter Einsle

Heinz Glaser

Gernot Schober

Juergen Barfuss

Wolfgang Giebel

Helmut Saller

Siegfried Unterberger

Wilfried Reissenweber

Norbert Sutor

Gunter Zeidler

Heinrich Liertz

Ulrich Priesnitz

Horst Goldmann

Erich Weil

Gerd Witt

Werner Schubert

Werner Goetze

Lienhard Schneider

Lothar Pokorny

Non-rising submarine optical cable

A plurality of light waveguides are conducted side-by-side through a coating arrangement that will surround the waveguides and supply them with a coating material for enclosing the light waveguides to form a ribbon conductor. The light waveguides are guided freely running both proceeding as in the coating arrangement so that they essentially come into contact only with the coating material. A drag flow or entrained flow of the liquid coating material contributes to a self-centering of the light waveguides and is produced by the longitudinal motion of the light waveguides in the coating material of the arrangement.

Method and apparatus for manufacturing an optical ribbon conductor

Optical cable and process for producing the same

A light waveguide is guided in the longitudinal direction over a defined length together with a filling compound, which are to be introduced into an outer envelope. The velocity of the light waveguide is subsequently decelerated to a lower value due to the reduction of velocity of the filling compound as it enters into the tubular envelope and, thus, the change in velocity converts the excess length of the waveguide into a non-straightline course or a serpentine configuration within the filling compound in the envelope.

Method and apparatus for introducing a light waveguide into a tubular

A method and apparatus for forming an optical cable includes an extruder for extruding a sheath on each light waveguide to form an independent light waveguide lead, a cooling device immediately following the extruder for cooling the light waveguide lead, which is then stranded to form a lead bundle.

Method and apparatus for manufacturing an optical cable

A method and apparatus for stranding with changing lay directions (SZ-stranding) utilizes an elongated cylindrical member which is driven with changing rotational sense on which the conductors are wrapped and supplied to a stranding disk at one end. The cylindrical member serves the purpose of stranding and is held under an axial tensile stress at its ends during the stranding process. The cylindrical member is also twisted to provide a torsional stress.

Method and apparatus for stranding conductors with changing lay

An optical cable comprising a central element surrounded by a layer containing a plurality of inwardly opening chambers, with each chamber receiving a stack of bands, which bands contain a plurality of waveguides. Preferably, each of the chambers is formed by a sub-element which has a U-shape in cross section and the sub-elements are formed on the cable core in a stranded manner, either by being stranded individually thereon or by being extruded individually thereon.

Optical cable and method for manufacturing the optical cable

Optical cable with at least one optical waveguide

A protective sheath for an optical transmission element is constructed of an inside layer of polycarbonate and an outside layer of a material which has a high degree of crystallization with the crystallization temperature of the outside layer preferably being below the softening temperature of the polycarbonate used for the inside layer so that the heat of crystallization release during crystallization will retard the cooling of the inside layer to produce solidification of the inside layer from the inside of the element toward the outside.

Optical transmission element having a two-layer protective sheath and

A method for inserting cables within a pipe characterized by closing one end of the pipe with a cap having an opening or port for introducing a flow of an agent and having a plurality of closed entry channels, opening one of said entry channels and inserting a cable through said opened entry channel while applying a flow through the opening or port so that the flowing agent creates a turbulence within the pipe for engaging the surfaces of the cable inserted through the opened entry channel to carry said cable along the length of said pipe.

Method for drawing cables into a pipe

Earth-wire overhead cable

A method and apparatus for forming a cable which has a supporting member that is provided by an extruder with helically extending grooves or chambers that proceed in changing directions for the acceptance of light waveguides characterized by synchronously rotating the cable elements proceeding an extruder for applying the supporting member and also following the insertion point for the light waveguides. The light waveguides are inserted at a position which is an even-numbered multiple of the distance between reversing points of the chambers of the supporting members from the output of the extruder so that the direction of the chambers at the extruder and at the insertion point, respectively, proceed in the same direction.

An optical cable comprises at least one bundle composed of a plurality of light waveguides which are preferably wrapped as a layer on a cable core. A non-hardenable filling compound is provided on the inside region of the light waveguide bundle between the layer of waveguides and core and the outer surfaces of the layer of optical waveguides is coated with a hardenable compound.

Optical cable and method for manufacturing thereof

A method for manufacturing an optical cable includes simultaneously introducing a light waveguide and filling material into a chamber of a central element with the waveguide having an excess length. Preferably, the central element is moved axially and rotated on the axis and the light waveguide and filling material are passed through a tube which is inserted in the chamber as the central element is moved relative thereto.

Method for manufacturing an optical cable

An optical cable comprising a carrier member extending in a longitudinal direction and having outwardly accessible chambers receiving light waveguides, each of said chambers being separated from one another by a web characterized by a depression being formed in each of said webs to enlarge the heat-emitting surfaces and to remove undesirable accumulation of material in the region of the carrier members. The depressions preferably have a V-shaped cross section, and are smaller than the channels and are able to receive additional elements, which may include waveguides, tensile elements or electrical conductors. Each of the V-shaped depressions can also e used as a gas channel when the optical cable is to operated in a gas-pressure monitored fashion.

Growing community of inventors

Munich, Germany

Ulrich Oestreich