Abstract: The invention relates to a connector for fiber optics, having two ferrules mounted on the end of each of the fibers to be connected, each having a bore into which the fiber optic can be inserted loosely and fixed in place such that its end coincides with the end of the ferrule, and a female reconstitution coupling having a longitudinal bore to support and align the two ferrules face to face, and longitudinal pressure means to thrust each of the ferrules toward the other, characterized by the fact that it includes a separator (11) of resilient plastic material having a refractive index equal to or close to that of the core of the fibers (8) to be connected, the said separator having, prior to its installation, a thickness at least equal to the gap (e) between the ends of the confronting fibers once the connection is made, the said separator (1) being made integral with a sleeve (12) adapted to be positioned and held inside of the female reconstitution coupling.