How to check if the fiber optic cable is properly spliced

Inspecting fiber optic splices involves cleaning, cleaving, precise alignment, fusion, and post-splice verification to ensure minimal signal loss and long-term reliability. 1.

Preparation and Safety

Before inspection, ensure all tools and work surfaces are clean. Wear safety glasses to protect against fiber shards, and use lint-free wipes and 99%+ isopropyl alcohol for cleaning fiber ends. Verify that the fusion splicer and cleaver are calibrated and in good working condition.

2.

Fiber Cleaning

Strip the outer jacket and buffer coating carefully without stressing the fiber. Wipe the exposed fiber from the coating edge to the cleave tip in a single downward stroke to remove dust, oil, or debris. Use a fiber cleaning pen or optical-grade cleaning fluid for stubborn contaminants.

Inspect the fiber end under a microscope or splicer camera to ensure it is free of scratches, chips, or oil streaks. 3.

Fiber Cleaving

Place the fiber in the cleaver's groove without bends or tension. Lower the cleaver arm until a distinct click indicates a proper score. Inspect the cleave face to ensure it is flat, perpendicular (