Abstract: An optical conductor comprises a fiber, in particular a glass fiber, surrounded by a protective polymer material of the UV-curable type. The protective polymer material contains a water-absorbing additive, preferably a carbodiimide, a poly-carbodiimide, or a polyurea. When the additive is based on carbodiimide, it opposes photodegradation.

Abstract: The method of laying and clamping an elastic tubular covering on an element consists in using a rigid tubular support mounted on the element and previously provided with said covering expanded thereon. In the laying method and the corresponding assembly, flexible associated auxiliary means that are strong in traction and not stretchable are provided for temporarily mechanically securing the expanded covering on said support to said element on which said covering is thus mounted and positioned. The invention is applicable to use at an end of an electric cable or at a junction thereof.

Abstract: An optical fiber multi-ribbon including at least two initial optical fiber ribbons having individual first sheaths for assembling the fibers of each ribbon together side by side and in a common plane. The initial optical fiber ribbons are disposed side by side and in a common plane and a common exterior second sheath surrounds the initial ribbons. The individual first sheaths of the initial ribbons and the common exterior second sheath are made from the same resin. This resin is advantageously relatively hard. Applications include high-density optical telecommunication cables.

Abstract: The power cable splice includes two cables, the stripped respective end portions of which are interconnected by a metal connector and are covered by a splice body and by electrical shielding. The splice further includes a flexible composite plate including a first layer that is semiconductive, and a second layer that is not electrically conductive, the plate being wrapped around the connector and around the ends of the stripped insulation of the cables, with the semiconductive layer of the plate being in contact with the connector.

Abstract: The present invention relates to an optical unit for an optical fiber telecommunications cable, the unit comprising a tube of a plastics material in which at least one optical fiber is loosely received, wherein the thickness of said tube is less than or equal to 0.5 mm, and wherein said material has a modulus of elasticity less than 1500 MPa at 20.degree. C. and a stress/elongation curve without a yield point.

Abstract: Dispersion-shifted monomode optical fibers have an effective mode surface area greater than 65 &mgr;m2 by optimization of the geometrical characteristics that characterize the fibers.