Abstract: Supporting elements (SE1-SEn) are provided between chamber elements (KE1-KEn) of an optical cable (OC1), which are disposed annularly in at least one layer. These supporting elements extend substantially in a radial direction, in which case their radial extent is selected to be at least equal to the radial extent of the chamber elements (KE1-KEn).

Abstract: An optical cable has segment-like chamber elements with openings receiving a stack of waveguide bands characterized by the bands of each stack having a different length to compensate for stresses created by stranding the elements in an optical cable. To obtain the different lengths for each of the waveguide bands in a stack, the cable element is guided over a curved path, such as on a periphery of an insertion disc and the waveguide bands are then introduced into the chamber of the chamber element while in this curved position.

Abstract: In an optical communication network for multiplex operation, a light waveguide is conducted up to a branching point proceeding from a respective distributing location. A division of the signals into two sub-signals with a directional coupler occurs at this branching point. A second light waveguide that is connected to the second input of the directional coupler is additionally laid between the distributing and the branching point. A switching onto the second light waveguide is provided. A system is described for two-way management using a pair of direction couplers connected crossed to a plurality of direction couplers on the subscriber side.

Abstract: A cable, which has a cable core surrounded by a band which has been provided with tensile elements, has an improvement with the tensile elements being wound on the band to extend obliquely to the longitudinal edges of the band and to the axis of the cable.

Abstract: A method of manufacturing an elongated optical transmission element having a tubular protective sheathing or tube containing at least one fiber-like light waveguide which has a form of a helix. The method includes subjecting each of the waveguides or the combination of waveguides to an elastic pre-torsion while they are introduced into the protective sheathing or tube which is preferably formed by extruding.

Abstract: A longitudinally extending split sleeve of shrinkable material having a pair of reinforced, longitudinally extending edge zones and a closure system of closure elements for closing the edge zone characterized by one of the edge zones having a meandrous profile with cutouts and tabs and the other edge zone having cutouts for receiving the tabs. In one embodiment, the cutouts of the other edge zone are apertures. In another embodiment the other edge zone has a meandrous profile with both tabs and cutouts.

Abstract: For the layer-wise SZ-stranding of elements to be stranded about a core strand, the elements to be stranded are first temporarily cabled onto the core strand with a long lay and alternating direction of lay, subsequently roped down from the core strand by means of a first cabling disc and fed, parallel to the core strand, to a second, oscillating cabling disc by means of which the final stranding is accomplished. The two cabling discs advantageously form the end faces of a twisting cage which revolves with alternating direction of rotation, with the distance of a first twisting closer, into which the core strand and the elements to be cabled enter, from the first cabling disc and the distance of the first cabling disc from the second cabling disc larger than the distance of the twist reversal points in the finished stranded material.