a fiber optic connector for coupling focused radiant energy from a laser to a fiber optic conductor includes a secondary transmission path , one or more diffusers and , optionally , one or more internal heat sinks for diffusing radiant energy so as to and thereby minimize damage to the connector . in addition , coupling of the radiant energy to the cladding of the fiber is minimized by stripping or at least partially removing the cladding to reduce the amount of cladding in the area that extends to the focal plane of the radiant energy source , while reduction of higher order propagation modes may optionally be achieved by tapering a section of the fiber in such a manner that light entering the fiber at large critical angles are effectively collimated , i . e ., bent towards the axis of the fiber .