The attenuation of fiber optic fusion is generally: 1. Quality issues with the fiber optic cable itself, where the fiber optic core is not round but elliptical. 2. There is a problem with the melting point process, resulting in excessive attenuation. 3. The end connector is too dirty. 4. The optical circuit tester itself has issues.
The following points can cause significant attenuation in fiber optic fusion:
1. The welding machine mode is not set correctly, such as using single-mode welding to melt multiple modes or double cladding;
2. There is a problem with the discharge capacitor, and the energy cannot be reached during fusion welding (this problem is generally not possible, otherwise this machine would be very ineffective);
3. Fiber optic mismatch, such as when using single-mode and multi-mode fusion;
4. The optical fiber is not cut properly and the end face is uneven;
5. The optical fiber is not wiped clean and there is dust and air inside;
6. The quality of tail fibers does not meet the standards, such as network grade, telecom grade, and ordinary tail fibers. Generally, telecom grade tail fibers are required for network speeds above gigabit;
7. Coupler. The quality of the coupler directly affects the magnitude of the loss value. Based on my years of experience, the general loss value is relatively high, and most of the problems are reflected in the coupler;
8. The fiber optic cable fusion splicer's skills are not very strong.