A process for the common treatment of capillary tubes - are made of silicon dioxide, the same in order to be provided with a conical inlet, for connecting mono modernized, optical fibers

摘要

Process for the collective treatment of capillaries of silica for the formation of the cones of the input of a monomode optical fibers to be connected. & br / according to the invention, said method comprises the following steps: & br / - at least one silica composite bar comprising a central zone (11) of silica doped, of substantially cylindrical shape, and an outer zone (12) of pure silica, having substantially the shape of a cylindrical ring surrounding the central zone, & br / - drilling of a central hole (13) through said central zone (11) of the composite bar, & br / - drawn composite bar to obtain a capillary tube (20) of inside diameter, & br / - cutting of the drawn composite bar in a plurality of rods of a given length, & br / - assembling and bonding of said rods into faggots, - cutting of the bundles by a plurality of sections (31) of given length, & br / - dipping each face of said edges into a bath (40) of selective etching so as to obtain, for each of the hair, of the cones (22) of the input of a given size, by difference in speeds of attack in the silica doped and the pure silica. & br / application to the connection of the monomode optical fibers.