Abstract: A technique for repairing or joining lengths of ultra-fine, small diameter optical fiber cables is described. The technique comprises: positioning a hollow cylindrical ferrule over one of two cable portions; forming a splice joint between the optical fibers to be joined together; forming a protective buffer layer about the splice joint; sliding the ferrule over the protective buffer layer and into overlapping relationship with each cable portion; and bonding the ferrule to each cable portion. An apparatus for performing the repair or joining technique is also described.