A duplex fiber connector is a type of fiber optic connector that is used to connect two strands of fiber optic cable. It is designed to provide a secure connection between two cables, allowing for the transmission of data over long distances. Duplex fiber connectors are available in a variety of styles, including LC, SC, ST, and MTP/MPO. They are typically used in high-speed data networks, such as Ethernet and Fibre Channel. They are also used in telecommunications and other applications that require reliable, high-speed data transmission.