Arc fusion splicing is an established method for joining optical fibres in communication networks, ensuring splice loss down to 0. 05 dB and excellent reliability. Telecom fibres are covered by IEC 60793 and ITU-T G. 657 standards, with common material (fused silica) and. Fusion splicing is the process of fusing or welding two fibers together usually by an electric arc. The appropriate part number can be configured using the procAs we have seen, the quality of a fusion splice depends on a variety of charac-teristics such as mechanical strength, reliability, reflectance, and transmission loss. The guide provides the complete workflow, covering safety precautions, tool selection, fiber preparation, fusion operation, quality control, and.