With the special fiber cleaver or cutter, the cleaned fiber is cut. The cut has to be so precise that it produces an end angle of less than 0.5 degree on a prepared fiber. If the cut is bad, the splicing loss will increase or machine will not accept for splicing. The shape of the cut can be monitored on the video screen, some of the defect noted while cleaving are listed below :
(i) Broken ends.
(ii) Ripped ends.
(iii) Slanting cuts.
(iv) Unclean ends.
It is also desirable to limit the average splice loss to be less than 0.1 dB.