Optical cable for telecommunications, method to manufacture an optical cable for telecommunications, optical fiber suitable for use in an optical cable and method for making the same.

摘要

"Optical cable for telecommunications, method to manufacture an optical cable for telecommunications, optical fiber suitable for use in an optical cable and method for making the same.An optical cable (1) for telecommunications comprises an optical core (2) and the various elements or layers of protection and reinforcement (7, 11 and 13) placed around the optical core.The optical core (2) comprising in turn a central reinforcement element (4), a polymer layer (5),Several optical fibres (3) incorporated in the polymer layer (5) and a thin coating (6) which covers the polymer layer (5),The optical fibers having an alternating rotation in relation to their own axes, with a maximum value of at least 4 twists per meter,And comprising a core (12) having a elipticidade average in the range of 0.25 to 0.55.In such a way that the effects of birefringence of the fibers caused by the process of wiring are significantly reduced.