The fiber optic jumper is neither a conductor nor an insulator in the traditional sense, since it does not transmit electrical signals. Rather, it is a type of cable that is used to transmit optical signals over long distances using light. Fiber optic jumper are made up of strands of glass or plastic fibers that are insulated with a protective coating. The fibers are bundled together within a cable and are designed to transmit light signals from one end of the cable to the other.