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Standard Fiber to the Home (FTTH) stands out for its simplicity and reliability, providing stable and unlimited Internet access. Thanks to this, in recent years this service has started to be taken seriously by telecommunication companies all over the world, it is a modern solution for installing the Internet in the home, and the technology supporting this solution is being rapidly developed. There are two types of system enabling FTTH broadband connection, these are active optical networks (AON) and passive optical networks (PON). Due to savings in fiber optic costs, the vast majority of FTTH deployments use PON.
network.At the moment there are two main PON standards: Gigabit Passive Optical Network (GPON) and Ethernet Passive Optical Network (EPON). No matter what PON standard we use, the basic topological structure remains the same. The Gigabit Ethernet Passive Optical Network system (GEPON) essentially consists of an optical linear terminal (OLT) and a number of optical network units (ONU). In addition, an optical distribution network is used for transmission between OLT and ONU / ONT. (ODN).
OLT (Optical Line Terminal)OLT is a base element of the optical access network, which is equivalent to a switch or router in a traditional communication network, and is also a platform providing multiple services. Usually located in a central office to provide a fiber interface to the user's passive fiber network (GEPON).
