The main steps of fiber optic welding

Stripping optical cable: Fix the optical cable into the splice box, taking care not to damage the bundle tube. The stripping length is about 1 meter. Wipe the ointment clean with toilet paper, thread the optical cable into the splice box and secure the steel wire, ensuring it is tightly pressed to prevent loosening.

Fiber end face preparation: Use specialized wire stripping pliers to remove the coating layer, and then wipe the bare fiber several times with a cleaning cotton dipped in alcohol. Use a precision fiber optic cutting knife to cut the fiber optic cable, and the cutting length varies depending on the coating on the fiber optic cable. Place the fiber optic cable in the V-shaped groove of the fusion splicer, carefully press on the fiber optic pressure plate and fiber optic fixture, and set the position of the fiber optic cable in the pressure plate.

Welding: Turn on the power of the welding machine and select the appropriate welding method. The power supply of the fusion splicer can be AC or DC, and the appropriate fusion splicing method should be selected based on the optical fiber and working wavelength (such as 1310nm and 1550nm) used in the system. The welding machine will automatically complete the welding process, usually taking only 11 seconds.

Reinforced fiber optic: Remove the fiber optic cable and heat the heat shrink tubing with a heater to protect the fused fiber optic joint. The temperature of the heater is high, so avoid touching the heat shrink tubing and ceramic parts of the heater during operation.

Coiling and fixing: The spliced optical fiber is coiled onto the fiber storage tray, and the fiber, storage tray, splice box, terminal box, etc. are fixed to complete the fiber fusion splicing.

Precautions and common problems for fiber optic welding:

The quality of end face preparation: The quality of fiber end face production directly affects the quality of splicing, so qualified end faces must be produced first.

Fixing and Heating: When fixing the optical cable, ensure that the steel wire is tightly pressed, and avoid touching high-temperature parts when heating the heat shrink tubing.

Maintenance of welding machine: The vulnerable parts of the welding machine, such as the discharge electrode, need to be replaced regularly. Usually, after 4000 to 5000 discharges, the electrode needs to be replaced or re polished.