Our product expert for fiber optic technology explains the splicing process in 10 steps, points out what to watch out for, and recommends appropriate tools. What is Fiber Optic Splicing and Why is it Needed? – #1. Another method of connecting optical fibers is termination or connectorization, which consists of processing the end of a fiber optic bundle so that it can be connected to other fibers or devices through fiber optic. Fusion splicing is both an art and a science. Done right, it produces connections with less than 0. 1dB loss that will last the life of the cable plant. Fusion splicing welds two fibers together using an electric arc and provides the. What are the process steps of fiber splicing 1.