A Review of Passive Optical Networks: Pros, Cons and Current Trends

Passive Optical Networks (PONs) have become a popular fiber access network solution because of its service transparency, cost effectiveness, energy savings, and higher security over other access networks. This paper discusses about the evolution and basic structure of Passive Optical Networks. In this paper we discussed about the Access networks, their classifications and its types. How copper networks differs from optical network The Difference between active and passive optical networks and basic system of Passive Optical Networks. We show through analysis that Passive Optical Networks are very cheap and can provide better services as compare to copper access networks. PON is also better option for access networks because it is very cheaper than active optical networks.