Broadband Optical Fiber Access Network

Optical fiber access network is developed rapidly in recent ten years and the new technology solves the last 1 km transmission from optical transmission network to customers. The broadband optical fiber access network is developed from analog to digital system, the representative of analog signal optical fiber access network is HFC (hybrid fiber coaxial) network, and the representative of digital signal optical fiber access network is PON(passive optical network). HFC is a developing technology from the middle 90's last century and has been used extensively. PON is a new technology risen in recent years. PONs includes APON (ATM PON), EPON (Ethernet PON) and GPON (Gigabit PON). The key techniques and features of these access networks are analyzed and discussed in detail in this paper.