Verify Splicing and Heating Settings: If the splicer is set to Auto, change the programs to align with the fiber type you are using. Confirm the Cleave Angle is Accurate: Proper cleave angles ensure better fiber splicing, leading to lower loss levels. This guide reveals the secrets to fusion splicing with little fluff—just proven, straightforward techniques refined from years of work in the field. The guide provides the complete workflow, covering safety precautions, tool selection, fiber preparation, fusion operation, quality control, and. However, even the most advanced fibre fusion splicer is prone to occasional problems due to environmental conditions, mechanical wear, or user error. Fiber contamination Alignment error messages. 1 dB). If your fibres aren't fusing properly in your fusion splicer, you're not alone.