In "Optical network design and implementation process," Vivek Alwayn wrote: "the world's more than 80% of long-distance voice and data traffic through the fusion splicer." To replace the damaged parts or create long points, a method is no seam connecting cable instead of having some of the needs of high signal loss. Fusion-splicing method of choice. In the early fiber, fusion-splicing is a demanding, the most difficult task. Although today we must be careful - - - - - - - - - - - - the fusion splicer process is simple, the key step is completely automated.