【作者】 王晓东；

【导师】 义理林；

【作者基本信息】 上海交通大学 ， 信息与通信工程， 2016， 硕士

【摘要】 相对于有源光网络,无源光网络具有对不同传输速率的兼容性、对调制编码格式的透明性、更高的可靠性以及更低的成本等优点,但无源光网络的传输距离相对有限。正是无源光网络的这些特点,使其成为未来光接入网络的首选方案。TWDM-PON因其良好的后向兼容性、快速、低成本的升级策略,成为NG-PON2的标准。直调激光器作为光信号发生器相对于外调制器加光源而言有着更加低廉的成本,这在成本非常敏感的接入网中显得尤为重要。但由于直调激光器调制时,其工作状态会发生变化,进而产生正啁啾,使得直调信号在普通单模光纤中传输时,脉冲迅速展宽,信号质量急剧恶化,大大限制了信号的传输距离。这使得对于以直调激光器为基础的TWDM-PON,低成本的色散管理尤为重要。本课题在TWDM-PON框架内,提出一种基于利用直调信号正啁啾的低成本色散管理方案,实现0~100km全范围固定色散量补偿方案。在低成本条件下,实现了直调信号的长距离、高功率预算、无误码传输。研究的主要内容包括:直调激光器的啁啾分析、啁啾与光纤传输色散的综合分析、固定色散补偿以及系统性能分析。在上述理论研究与实验的基础上,将研究成果应用于企业横向项目中,顺利将该方案应用于上行4*10Gbps光接入原型机开发中。更多还原

【Abstract】 Compare with active network,passive network has lots of advantages,such as compatible with different transmission rates,compatible with different modulation formats,high reliability,low cost,and so on,but passive network can only transmit limited distance.Considering all those factors,passive network becomes the chief choice of future optical access network.TWDM-PON has been selected as the standards of NG-PON2 for its low cost and flash upgrade by FSAN.As we all know DMS(directly modulated signal)is much cheaper than external modulation signal,while DMS has chirp,which would combine with fiber dispersion destroy signal quickly.So in long reach DML(directly modulated laser)-based TWDM-PON,the low cost dispersion management strategy is a key topic.In this article,within the framework of TWDM-PON,we proposed a new dispersion management strategy based the positive chirp of DMS,covering range from 0 to 100 km distance.Achieving DMS transmit for long distance,high power budget and error-free transmission with low cost.The main research contents include: the chirp analysis of DML,fixed dispersion value for fiber dispersion and signal chirp management,system performance analysis.Finally,on the basis of the above-mentioned theory research,we applied the scheme in the prototype of 4*10 Gbps PON.更多还原