GEPON (Gigabit Ethernet Passive Optical Network) is consist of
OLT(Optical Line Terminal), ONU (Optical Network Unit) and the
optical splitter. OLT provides the uplink Ethernet port which is
connected to IP core network, and meanwhile offers the downlink PON
ports. Every PON port is connected to the optical splitter by the
single optical fiber, and then connected to ONU according to the
certain ratio