Fiber optics are made of special materials and, unlike telephone wires, can repair the connection on their own if they break.
Check the fiber for damage
Insert the fiber optic cable into the tail tube, then put the fiber optic cable into the stripper to check whether the fiber is damaged.
Remove damaged parts
Break off one of the unused strips, and wipe the optical fiber with the alcohol-stained test paper.
Cut the fiber, and remove the cable after cutting.
Fixed connection terminal
Install the optical cable on the connector and fix the optical cable.