Abstract: A device for connecting optical fibers, the device being of the type comprising a ferrule possessing a capillary channel of section that is substantially complementary to the optical fibers to be connected and that is suitable for receiving the respective ends of two optical fibers, wherein the device further includes a body overmolded on the ferrule and defining two entry cones centered on the capillary channel and opening out respectively into the two axial ends of the capillary channel.

Abstract: A method of making an inlet cone at one of the ends of a connection endpiece for optical fibers, the endpiece being in the form of a cylindrical rod of outside diameter D and including an internal capillary of diameter d.sub.i, the method consisting in providing the end of the connection endpiece with a guide part constituted by a cylindrical body having formed therein: firstly a cylindrical bore of diameter substantially equal to the diameter D of the endpiece, which bore is delimited inside the cylindrical body by a wall constituting an abutment for the end of the endpiece when the endpiece is inserted into the bore; and secondly a guide hole having at least one tapering portion opening to the outside of the cylindrical body with a diameter that is greater than the diameter d.sub.i, and opening into the cylindrical bore at the capillary with a diameter which is substantially equal to the diameter d.sub.i of the capillary. The invention is applicable both to monomode and to multimode optical fibers.

Abstract: A process and system for the relative positioning of two optical fibers wtih a view to establishing an optical link between them is disclosed. According to the invention, an image is formed of each fiber on a screen and on said image on the screen is represented the contour of the fiber core, said contour being in its effective position. The contours of one of the fibers and the core thereof are displaced on the screen until the contour of said core is aligned with the contour of the core of the other fiber and said fiber is displaced until its image coincides with its contour. An application of this invention is for the connection of optical fibers to one another.