EPON is a broadband access system based on Ethernet technology
with data encapsulated in Ethernet frame structure. Instead of the conventional Ethernet medium access mechanism of point-to-point and shared medium
a new mechanism of point-to-multipoint is put forward
i.e. PON medium. Therefore many complex problems are educed for an EPON system
such as physical medium parameters
encoder/decoder
SerDes
upstream burst communication
etc. This article mainly describes the physical layer structure of gigabit Ethernet. The key technical challenges to be solved for EPON have been investigated in detail
accordingly resolutions for these problems have been given.
关键词
千兆以太网无源光网络编/解码器串行/解串器抖动上行突发通信
Keywords
gigabit EthernetPONencoder/decoderSerDesjitterupstream burst communication