PON在电信接入网提速改造中的应用

传统ADSL或FTTB+LAN接入网的上下行非对称的传输使得速率低，故障点位多等缺点很难适宜宽带网络的技术需求，在宽带需求高速增长的状态下，现有的接入网络传输瓶颈难以满足速率需求。选用PON技术，设计ODN光分配网络来改造接入网，将单纤传输与无源光网相结合，体现了其独有的组网优点。改造结果表明，PON技术在宽带接入“最后一公里”组网中的应用，传输速度提高了60%，境外网站下载速率为800Kbps，本地网站下载速率最高可达1.86Mbps。

Application of PON in speed raising of telecommunication access network

Traditional ADSL or FTTB + LAN access network uplink and downlink non - symmetric transmission makes low rate, fault point position and other disadvantages to be hardly suitable for broadband network technology needs, in a state of rapid growth in demand for broadband, and existing access network transmission bottleneck is diffi cult to meet the demand rate. Selection of PON technology, designing ODN optical distribution network to transform the access network, the combination of single fiber transmission and passive optical network, reflected the unique networking advantages. Transformation results show that in the application of PON technology in broadband access to “the last mile network”, the transmission speed is increased by 60%, overseas download speed is 800 Kbps, local download rate is up to 1.86Mbps.