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Fiber Fusion Splicing Technology

Oct 22, 2021
Optical fiber splicing is a meticulous work, especially in the end-face preparation, fusion splicing, fiber coiling, and other links, requiring careful observation, careful consideration, and operating specifications.
In the fiber splicing test, it is fully understood that the splicing technology is more than just looking at the data, and you can master it by simply learning. In the practice of repeated welding, we must peel off the technical points and master them proficiently. In the test, I also learned that you can't do things lightly, and you have to be careful and serious. In daily work, we should learn from the rich experience, to see, think, and analyze the standard details and the main points of the welding when the colleagues do the welding.
General optical cable splicing steps:
The first step: stripping the cable; when stripping the optical cable, straighten the two ends of the optical cable first, generally use a utility knife to peel off the protective layer of the optical cable at the end of the optical cable from 80cm to 100cm, remove the coreless tape group, and leave a 10cm reinforced core for use For fixed optical cables;
Step 2: Fix; fix the stripped optical cable to the fixed equipment of the connector box, open the optical cable connector box, unscrew the screw, and place the optical cable on the fixed equipment. The belt set should be placed clockwise and horizontally with the fiber tray. To ensure that it will not cause damage to the core. The fiber optic cable should be fixed firmly, and the reinforced core should be bent at 90 degrees to prevent damage to the fiber core by pulling;
Step 3: Splicing the fiber; after fixing the optical cable, peel off the protective layer of the core at the specified position. When removing, remove the protective layer of the core with one hand, and wipe the core with the other hand and place it in a standard manner. After finishing all the cores, put a heat shrinkable tube on each core. Take out the fusion splicer and other equipment tools and turn on the fusion splicer. Use a fiber stripper to strip the fiber. After peeling a fiber core, gently pull it to check whether the fiber core is intact. During the splicing process, ensure that the core is clean, wipe the core with alcohol, and then use the cutter. The cross-section of the processed core should be clean and tidy to ensure the successful splicing. In the case of not knowing the core of the transceiver fiber, it should be spliced in order according to the standard order of the core (blue, orange, green, brown, gray, white, red, black, yellow, purple, light pink, light blue). When using the fusion splicer, the operation should be standardized, and the protective cover should be covered after the fiber core is put in to prevent dust from falling in, which may cause fiber fusion failure. The core loss rate of the melted fiber should be less than 0.03dB.
Step 4: Reel the fiber; according to the specifications of the fiber reel, place the melted fiber core specification in the fiber reel and fix it. The arc of the fiber core must be more than fifteen times the diameter of the optical cable to avoid the fiber core. damage.
Finally, seal the joint box, check whether the equipment and tools are complete and intact, and clean up the garbage on site.
Shortcomings in the test:
1 When stripping the cable, the force of the knife is not well grasped, and the cable is cut many times, which may cause damage to the fiber core in the belt group;
2 When the optical cable is fixed to the connector box, the fixed curvature of the reinforcing core is not standardized, and the core tape group is not placed in a clockwise direction when fixing;
3 The method of removing the protective layer of the fiber core is not standardized, and the retained length of the fiber core is not set according to the specifications of the fiber reel;
4 The method of stripping the fiber is unstable, and every time a fiber core is stripped, it is not checked whether the fiber core is damaged;
5 Unreasonable placement of the fiber core during splicing. Irregular operations during splicing the fiber core and heating the heat-shrinkable tube cause the fiber core to be soiled;
6 During the fiber splicing process, the protective cover is not covered after the fiber core is put into the splicer;
Planning after the test: Practice fiber splicing more often. Practice more cable stripping, fiber stripping, fiber cutting, fixing fiber optic cable and splicing fiber, and fiber coiling, and familiarize yourself with the feeling of fiber stripping, the strength of fiber stripping, the technique of fiber cutting, the technology of fixing fiber optic cable and splicing fiber, and the standardization of fiber coiling. When practicing, you should start from the details and practice repeatedly. After each practice, summarize the shortcomings and then practice. Improved splicing technology in the fastest time.
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