Abstract: The invention relates to the field of processes for the production of an optical transmission cable as well as to the apparatus for carrying out such a process. The method is a process for producing an optical transmission cable from at least one tube (1) inside of which a plurality of optical fibers (2) are arranged, and strengthening elements (3, 4, 5), one of the said strengthening elements, constituting a central strengthening member (4), being arranged at the center of said cable and certain strengthening elements constituting peripheral strengthening members (3), said tube (1) being twisted about said central strengthening member (4) using a tubular machine so as to form a peripheral layer around said central strengthening member (4), the peripheral strengthening members (3) and the tube (1) having diameters sufficiently close to each other to ensure said peripheral layer is homogeneous.

Abstract: The invention relates to the field of processes for the production of an optical transmission cable as well as to the apparatus for carrying out such a process. The method is a process for producing an optical transmission cable from at least one tube (1) inside of which a plurality of optical fibers (2) are arranged, and strengthening elements (3, 4, 5), one of the said strengthening elements, constituting a central strengthening member (4), being arranged at the center of said cable and certain strengthening elements constituting peripheral strengthening members (3), said tube (1) being twisted about said central strengthening member (4) using a tubular machine so as to form a peripheral layer around said central strengthening member (4), the peripheral strengthening members (3) and the tube (1) having diameters sufficiently close to each other to ensure said peripheral layer is homogeneous.

Abstract: A head (10) for laying optical fibers (2) in alternating lay grooves (1A) in a cylindrical core (1), the head comprising a die-holder (11) interconnecting three dies: an inlet die (12); an indexing die (13) including indexing combs; and an insertion die (14); each optical fiber being guided through an orifice (12A) in the inlet die, then through an orifice (13A) in the indexing die, and finally being laid in a groove of the core by the insertion die, said head further including, upstream from the inlet die, a fixed mandrel (20) through which the core passes, said mandrel being constituted by a tube (21) having a front guide (22) disposed at its upstream end with the optical fibers passing through said front guide, said mandrel further including a series of rotating disks (23) located between said front guide and said inlet die.