The typical joint loss for a fusion splice between two single-mode fibers is around 0. Fusion splicing is the most widely used method of splicing as it provides for the lowest loss and least reflectance, as well as providing the strongest and most reliable joint between two fibers. Optical fibers can be joined together, such that light is efficiently transferred from one fiber to another. Unlike connectorized interfaces, fusion splices are designed to become. connectors have been developed and used in optical networks. Each c nnection technique determines how or where it should be used.