GEPON SFP is a type of fiber optic transceiver used in Gigabit Ethernet Passive Optical Network (GEPON) systems. It is a small form-factor pluggable (SFP) device that is used to transmit and receive data over fiber optic cables. GEPON SFPs are designed to provide high-speed data transmission over long distances, up to 20 kilometers. They are also designed to be compatible with a variety of GEPON systems, including those from vendors such as Huawei, ZTE, and FiberHome. GEPON SFPs are available in a variety of speeds, ranging from 1Gbps to 10Gbps, and are typically used in applications such as data centers, enterprise networks, and telecom networks.