Here's a step-by-step guide on how to join broken fiber optic cables effectively, along with the tools and techniques required. This article explores the most common problems encountered during fibre fusion splicing and provides practical, step-by-step solutions for each issue. What Causes High Splice Loss? One of the most frequent complaints among technicians is unexpectedly high splice loss. The guide provides the complete workflow, covering safety precautions, tool selection, fiber preparation, fusion operation, quality control, and. Fusion splicers are valuable tools in the field of fibre optics, enabling precise and reliable splicing of optical fibres. 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. Fiber fusion splicing utilizes high-temperature heating and alignment to ensure a low-loss.