无源光网络光回波损耗工程设计及应用  

Engineering Design and Application of Passive Optical Network Optical Return Loss

作　　者：余辰东[1] 

机构地区：[1]中兴通讯股份有限公司,上海201203

出　　处：《邮电设计技术》2014年第10期79-83,共5页Designing Techniques of Posts and Telecommunications

摘　　要：无源光网络(PON)提供的高带宽业务性能依赖于光分配网络(ODN)质量。在满足光功率预算的条件下,光回波损耗(ORL)是度量ODN健康度的重要指标。通过ORL的定义与计算方法,描述了ORL对业务的影响。参考相关国际/国内标准,确定了PON中ORL指标。通过动态光功率范围测试、替代测量和定位方案的应用,描述了ORL问题的排查方案。对比分析了工程实践中ORL指标劣化的因素,提出了解决措施和建议。通过多种手段的综合应用,才能保证高比特率应用场景下,端到端的业务质量和用户感知。The PON high bandwidth service depends on the quality of ODN network. Meeting the optical power budget conditions, ORL is an important index to measure the health of the ODN. Through the definition and the calculation method of ORL, the impact of ORL on business has been described. Referring to relevant international/national standards, the ORL index in the passive opti-cal network has been determined. In engineering practices, the solution for troubleshooting ORL problems has been given through the application of dynamic optical power range test, alternative measurement and positioning scheme. The sugges-tions and comments have been made by comparative analysis of ORL deterioration index in engineering practice. By using complex manners, the end to end quality of service and user perception can be ensured under high bit rate applications condi-tions.

关 键 词：无源光网络 回波损耗 光线路终端 光网络单元 动态光功率范围 过载光功率 

分 类 号：TN915.6[电子电信—通信与信息系统]