The bare fiber end is designed to be fusion spliced or mechanically spliced to the fiber optic cable in the field. Pre-routed and preloaded, pigtailed splice cassettes reduce installation time by up to 40%. This minimizes attenuation and optimizes network performance. 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.