The fiber connector end face (e., PC, APC) refers to the physical design (flat or angled) of the fiber itself, often noted in combinations like FC/PC or FC/APC-where "FC" denotes the connector type, and "PC/APC" indicates the end face design. Optical fiber connectors are fundamental components in modern communication networks, ensuring reliable signal transmission. They come in various types like SC, LC, ST, and MTP, each designed for specific. The overall shape and polish of a fiber end face dictate how light signals pass through a connector, directly impacting insertion loss and reflectance. In order to allow better contact between the end faces of two optical fibers. hing fiber optic connectors.