基于FTTH的ODN设计方法——上海“城市光网”技术创新和应用实践之三

当前,为适应三网融合、智慧城市、基础宽带网建设等一系列国家信息化发展战略的要求,各电信运营商已全面开展以光纤接入替代原有铜线接入的宽带网络改造工作。其中,ODN是FTTH建设和改造中的重点和难点,作为电信运营商,在ODN设计中应该考虑哪些问题以及如何实现标准化ODN的建设方案,是摆在面前的一个重要课题。本文围绕PON技术演进对ODN的要求、ODN覆盖半径、分光方式和分光位置、用户光缆网拓扑结构和交接配线方法、ODN验收测试指标等方面,全面论述了基于FTTH的ODN设计思路和方法。

The Designing Method of ODN for FTTH

In order to meet the needs of the national informatization strategies,including triple play,smart city,fundamental broadband network construction and etc,the telecommunication service providers in China are now actively progressing on the replacement of the copper access network with fibers.And during this process,ODN(optical distribution network) is the most critical and difficult part of the construction and renovation of FTTH.The design and the standardization of the ODN scheme are vital subjects to the telecom service providers.This article provides a comprehensive discussion on the design method of FTTH ODN,including the topics of how ODN can support the development of PON techniques,ODN coverage radius,the splitting method,the splitter locating,the user cable network topology,cross connecting distribution method and ODN network acceptance metrics.