An optical fiber fusion splicer is a specialized device used in the field of fiber optics to create permanent connections between optical fibers. The principle behind fusion splicing involves melting the ends of two optical fibers and fusing them together to form a continuous and low-loss connection. The fusion splicer machine consists of several essential components. It includes an alignment system that precisely aligns the fiber cores to minimize signal loss and maximize transmission efficiency. The splicer also incorporates an electric arc, which generates the heat necessary to melt the fiber ends and achieve fusion. Additionally, fusion splicers have advanced imaging systems and algorithms that aid in the alignment process. The function characteristics of an optical fiber fusion splicer include automated processes such as fiber detection, alignment, and arc initiation, enhancing operational efficiency. These machines are designed to be portable, enabling technicians to perform splicing tasks on-site.