Patent ID: 8406590
Filing Date: 2013-03-26
Classification: G02B,Y10T

Abstract:
1. Optical cable comprising at least one metal tube housing at least one optical fiber, said cable having a local excess fiber length (EFL) varying of or less than 0.2% along the longitudinal extension of the cable with respect to an average EFL of the cable wherein the metal tube has been shortened and then elongated by means of an apparatus for manufacturing the optical cable, said cable having a predetermined excess fiber length (EFL), the apparatus comprising a device for continuously forming a metal tube; a first feed channel for conveying at least one optical fiber into said metal tube; a first pulling device for making the metal tube and the at least one optical fiber congruent; a corrugator for shortening said metal tube; a second pulling device downstream of the corrugator for elongating said metal tube.