To fix it, first use a VFL laser or an OTDR to pinpoint the damage. For a permanent fix, fusion splicing is better than mechanical connectors because it prevents signal loss. Always protect the fiber optic cable repair with a sleeve and keep bends smooth in your trays. Then I put them in the fiber holding moduals, flip the modual in a gainer (spin in completely. While a cut or damaged fiber optic cable can temporarily take your network down, it is possible to quickly fix the cable with the right tools. Following these steps ensures. CommScope features a family of tools and components for the installation, repair and maintenance of fiber cables, including prep and termination kits. Never directly pull on the fiber itself.