3.3.2 BROADBAND PASSIVE OPTIC NETWORK
Broadband passive optical network is a wide band of
frequencies in the fiber optic connection which are available to transmit
information at high speed data rate and the information to be sent are
multiplexed before being put into the fiber. BPON systems can support downlink
performance of 155 to 622Mbit/s and uplink performance of 155 Mbit/s.[15]
3.3.3 GIGABIT PASSIVE OPTIC NETWORK
Gigabit Passive Optical Network GPON is an upgrade of BPON
with high speed data rates and this types of fiber is used to provider network
to the home .GPON is a point to multipoint access mechanism Its main
characteristic is the use of passive splitters in the fiber distribution
network enabling one single feeding fiber from the provider's central office to
serve multiple homes and small businesses at different places.
GPON has a downstream capacity of 2488 Mbits/s and an upstream
capacity of 1244 Mbit/s that is shared among users and Encryption is used to
keep each user's data secured and private from other users[16]
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