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Gigabit Passive Optical Networks (GPON)Gigabit Passive Optical Networks (GPON) is the leadingtechnology being used in FTTx (FTTH) deployments. PON is different than otheroptical network topologies in that it is a Point to Multi-Point (P2MP)topology. From the Central Office’s (CO) Optical Line Terminal (OLT, with SFPGPON transceiver/module) a single strand of fiber goes out to a passive opticalsplitter where its signal is multiplied to 64(128) different lines. The TX and RX signals operate on different wavelengths allowingbi-directional operation over a single fiber. Anything transmitted from the OLTis transmitted to all 32 lines. It is up to the customer’s system (OpticalNetwork Unit - ONU) to determine what packets are for that customer. All otherpackets are discarded. The PON current sta...
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