This specialised device measures the performance of fibre optic cables by sending light pulses along the fibre and analysing the reflections caused by imperfections, splices, or breaks. Statistics show that the main reason for communication interruption in optical fiber communication systems is optical cable line. ansmission lines. The proposed method seamlessly incorporates camera calibration, dense stereo matching, and D reconstruction. 2dB/km) and wide bandwidth (several hundred MHz to THz) to enable long-distance, high-capacity communication. In an era of ever-increasing digital connectivity, where milliseconds of network downtime can translate to significant financial losses, OTDR devices have emerged as critical guardians of.