Prysmian Cavi E Sistemi Energia S.r.l.

Prysmian S.p.a.

Marco Antonio Caiata

Franco Cocchini

Antonio Schiaffo

Giuseppe Ferri

Andrea Mazzotti

Alessandro Rossi

Antonio Adigrat

Valeria Caronna

Antonio Collaro

A method of manufacturing a glass core preform for an optical fibre comprising: providing a porous soot core preform having an outer surface) and a central hole extending axially therethrough; dehydrating the porous soot core preform at a first temperature by exposing the outer surface of the preform to an atmosphere containing chlorine, and simultaneously consolidating the soot core preform and closing the central hole at a second temperature higher than the first temperature to form a glass core preform, wherein consolidating and closing comprises sequentially alternating flowing chlorine containing gas into the central hole and reducing the internal pressure of the central hole.

Method of manufacturing preforms for optical fibres having low attenuation loss

Apparatus for applying traction to an elongate cylindrical element produced by fusion of an end portion of a preform of glass material, in which a traction device is capable of being connected to a portion of the elongate cylindrical element to provide traction of the elongate cylindrical element along an axis. A device for the rotation of the elongate cylindrical element applies a twist to the elongate cylindrical element about the axis simultaneously with the traction.

Plant for producing an elongate element usable for producing an optical fibre

Apparatus and method for applying traction to an elongate element produced by fusing a preform of glass material and usable in a process for producing an optical fibre

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Pontecagnano-Falano, Italy

Marco Antonio Caiata