Wheel for drawing a helical groove ring for optical fibers

Details Wheel for drawing a helical groove ring for optical fibers Wheel for drawing a helical groove ring for optical fibers

G - Physics

02

B

118/24

G02B 6/44 (2006.01)

Patent

CA 1287278

ABSTRACT OF THE DISCLOSURE A drawing wheel is intended for exerting a ten- sion a grooved ring while optical fibers are being laid in helical grooves in the core, in order to stretch the ring in a cabling line. The invention is aimed at defining a radius for the wheel in terms of the dimen- sional characteristics of the ring so that the fibers are kept longer than the grooves as the ring leaves the cabling line and reverts to an initial tension-free state. The radius of the wheel is such that R'>(p2/(4.pi.2r))-(r+h), where p and h respectively denotes pitch and depth of the helical grooves, and r denotes radius of a central portion of the core circumscribed by bottoms of the grooves. The wheel radius is preferably of the order of one metre or more.

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