EPON
EPON (Ethernet Passive Optical Network) is a kind of point-to-multipoint network structure, passive optical fiber transmission mode, based on high-speed Ethernet platform and TDM (time division multiplexing) time division MAC media access control mode, providing multiple An integrated service broadband access technology. It uses the PON technology at the physical layer, uses the Ethernet protocol at the link layer, and provides Ethernet access using the PON topology.
The EPON system uses WDM technology to realize single-fiber bidirectional transmission.
As one of the PON technologies, EPON has the advantages of both an Ethernet network and PON. An EPON is compatible with the existing Ethernet networks and facilitates management. Also an EPON own low cost, high bandwidth, and flexible networking. as a broadband access network, an EPON can improve the network bandwidth and performance, and reduce the maintenance cost. EPON is one of the optical access technologies favored by mainstream carriers.
GPON
GPON (Gigabit-CapablePON Gigabit Passive Optical Network) technology is the latest generation broadband optical passive integrated access standard based on the ITU-TG.984.x (International Telecommunication Union TG.984.x) standard.
it is with high bandwidth, High efficiency, large coverage, rich user interface and many other advantages are regarded by most operators as an ideal technology for achieving broadband and comprehensive transformation of access network services.
Currently, GPON has become the most widely used optical access technology thanks to its higher bandwidth, longer transmission distance, and powerful operation, administration, and maintenance (OAM) capabilities.
A complete GPON system consists of OLT, ONU and ODN.
