Optic fiber cable
PON encapsulate data with Ethernet and can offer 1 Gbps to 10 Gbps capacity.
The Ethernet Passive Optical Network (EPON)
EPON follows the original architecture of a PON. Here, the DTE connected to the trunk of the tree and called as Optical Line Terminal (OLT) as shown in the following illustration.
It is usually located at the service provider, and the connected the DTE branches of the tree are called Optical Network Unit (ONU), located in the premises of the subscriber. The signals from the OLT pass through a passive splitter to achieve the ONU and vice versa.