To resolve this, first check the fibre ends. Inspect cleave quality—use a precision cleaver with a sharp blade to avoid angles or chips. 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. High splice loss occurs when the fusion between two fibres does not achieve proper core alignment, resulting in excessive optical signal attenuation.