How to Use Optical Fiber Fusion Splicer

The most common single-core optical fiber fusion splicers generally use the same method:

1. Strip the fiber optic cable and fix the fiber optic cable to the fiber tray. Common optical cables are stranded, framed, and central bundled tube optical cables. Different optical cables need to take different stripping methods. After stripping, the optical cables must be fixed to the fiber rack.

2. Pass the stripped optical fibers through the heat shrinkable tube. Different bundle tubes and fibers of different colors should be separated and passed through heat shrinkable tubes.

3. Turn on the power of the fusion splicer and select the appropriate splicing method. Common types and specifications of optical fibers are: SM dispersion non-shifted single-mode fiber (ITU-T G.652), MM multimode fiber (ITU-T G.651), DS dispersion-shifted single-mode fiber (ITU-T G.653), NZ non-zero dispersion shift fiber (ITU-T G.655), BI bend resistant fiber (ITU-T G.657), etc., according to the different types of fiber to choose the appropriate fusion mode, and the latest fiber fusion machine has the function of automatic identification of fiber, can automatically identify various types of fiber.

4. Prepare the fiber end face. The quality of the fiber end face will directly affect the splicing quality, so a qualified end face must be prepared before splicing. Use a special wire stripping tool to peel off the coating layer, and then wipe the bare fiber with a clean linen cloth or cotton moistened with alcohol for several times. Use a precision fiber cleaver to cut the fiber. For 0.25mm (outer coating) fiber, the cutting length is 8mm-16mm; for 0.9mm (outer coating) fiber, the cutting length can only be 16mm.

5. Place the optical fiber. Place the optical fiber in the V-shaped groove of the fusion splicer, and carefully press the optical fiber platens and the optical fiber fixtures. The position of the fiber in the press plate should be set according to the length of the fiber cutting, and it should be properly placed in the wind shield.

6. Connect the optical fiber. After pressing the splice button, the fibers move towards each other. During the movement, a short discharge is generated to clean the surface of the fiber. When the gap between the fiber end faces is suitable, the splicer stops moving towards each other, sets the initial gap, measures the splicer, and displays the cutting angle. After the initial gap setting is completed, start to perform core or cladding alignment, and then the fusion splicer reduces the gap (the final gap setting), the arc generated by the high-voltage discharge fuses the left fiber into the right fiber, and finally the microprocessor calculate the loss and display the value on the display. If the estimated loss value is higher than expected, you can press the discharge button to discharge again, and the splicer will still calculate the loss after discharge.

7. Take out the optical fiber and reinforce the optical fiber fusion splicer with a heater. Open the windshield, take the optical fiber out of the fusion splicer, and then move the heat shrink tube to the fusion splicing point, put it in the heater to heat it, and take out the optical fiber from the heater after heating. During operation, due to the high temperature, do not touch the heat shrink tube and the ceramic part of the heater.

8. Coiling and fixing the fiber. Put the connected optical fiber tray to the optical fiber receiving tray, fix the optical fiber, receiving tray, splice box, terminal box, etc., and the operation is complete.

Post time: 2021-01-15


Lomoveishiy – Finland

I needed those to connect my PC on the third floor to have internet access in that room, and ISP installed their modem on the first floor only. After dropping fiber patch cables, plugged in all cables into these media converters at both sides, and link came up instantly. Was much easier than I thought!

Raymond – USA

Great experience – units worked straight out of the box – just needed plug in cables and we were done. I also like the possibility to enable jumbo frames, while we do not have a need for this feature at the current moment it’s great to have this option.

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