Les Cables De Lyon

Alcatel Cable

Robert Jocteur

Jacques Bendayan

Bernard Boutevin

Jean-Yves Barraud

Jean-Pierre Parisi

Jean-Pierre Dumas

Sophie Gervat

Louis Le Davay

Aline Cahuzac

Victorin Ratovelomanana

A polymer material of the fluorine-containing polyurethane acrylate type for coating an optical fiber or for an optical fiber tape, the material being based on at least a diol, a diisocyanate, and an acrylate, and being characterized by the fact that at least one of the above compounds contains fluorine and that at least one of the above compounds contains sulfur.

Polymer material of the polyurethane acrylate type for coating an

A multi-waveguide cylindrical optical conductor for telecommunications cable, the conductor comprising a plurality of optical fibers, each of which is a unit cylindrical fiber constituted by a core and by cladding, the unit fibers are all connected together by silica after a fiber-drawing operation, wherein said core of said unit cylindrical fiber has a diameter of about 8 .mu.m to 10 .mu.m, wherein said cladding has an outside diameter lying in the range 25 .mu.m to 35 .mu.m, and wherein all of the cores of said unit fibers are either situated regularly on generator lines of a cylinder having the same axis as said conductor, or else are parallel with one another and are coplanar. An optical conductor can thus be obtained having an outside diameter of 125 .mu.m and containing six waveguides each having a diameter of about 25 .mu.m to 35 .mu.m.

Multi-waveguide cylindrical optical conductor for telecommunications

The present invention relates to the preparation of an optical fiber in a form suitable for use in the manufacturing of a telecommunications cable having one or several fibers. The fiber is reinforced by a longitudinally disposed support element intended to bear at least a part of any traction forces which would otherwise be borne by the fiber.

Mechanical protection and reinforcement for optical fibers

The present invention relates to optical fibres with a protective covering for use in cables. The fibre is protected by a covering of plastic material extruded from an extruder the punch of which protrudes 0.5 to 1 mm beyond the draw plate, and rapidly cooled at the outlet of the draw plate, so that it surrounds the optical fibre with a clearance between 1 and 10 microns.

Optical fibre with a protective covering

Coating for optical fibres comprising at least one layer of a resinous composition which hardens in the cold and in a few seconds upon contact with a gaseous catalyst applicable more particularly to optical fibres intended to be assembled together in a cable.

Growing community of inventors

Lyons, France

Robert Jocteur