An optical fiber with a bare end portion is faced-off precisely at 90 degrees. With an unsecured ferrule loosely located on the fiber, the fiber is passed through oversize openings in a fiber holder and a crimping station. The bare fiber portion is located in the interstice of three rods having identical diameters and the assembly is releasably held by jaws in a holding station. The faced-off fiber end is positioned slightly inwardly from the end faces of the rods by a limit pin. The fiber holder is tightened onto the fiber to maintain it in straightened condition and the ferrule is then slid into place over the three rods and included fiber. The crimping station is moved along a track toward the holding station until crimping jaws are positioned about the ferrule, three rods and fiber. Crimping jaws deform the ferrule at several different places firmly securing it in place on the rods.