An optical fiber splice loss test point apparatus and method based on the detected leaked light

The present invention discloses apparatus and method for testing an optical fiber splices leakage loss based on the detected light, leakage of light received by the photodetector in accordance with the spherical power and the value of the input power source with known adjustment coefficient K value, according to the formula: may be △ loss splices calculated size. Advantageous effect of the invention is that after completion of all types of fiber optic connector and the indoor Butt, the optical fiber connector is inserted into the access device of the present light source, and by clamping the three-dimensional look for focus adjustment control means to achieve fiber positioning nip to the fusion site focus, spot welding according to the size of the leakage of the optical power, their size can be estimated loss.