Fiber Optic Patch Cord is a length of fiber optic cable with connectors fixed on two ends to realize the optical path active connection. If both sides of the connector or its end-face are different, we call it hybrid patch cord. According to the transmission medium, it divides Single Mode and Multi-Mode; according to the connector structure type, it divides SC, LC, FC, ST, MU, D4, E2000, etc; according to the polished ceramic end-face, it divides PC, UPC and APC.