支持高功率预算与多速率兼容的50G PON系统  

50G PON system supporting high-power budget and multi-rate compatibility

作　　者：王宁 贾晓硕 袁贺 张楠楠 李俊玮 WANG Ning;JIA Xiaoshuo;YUAN He;ZHANG Nannan;LI Junwei(Department of Fundamental Network Technology,China Mobile Research Institute,Beijing,100053,China;R&D Department of Optical Product,Huawei Technologies Co.,Ltd.,Wuhan,430223,China)

机构地区：[1]中国移动通信有限公司研究院基础网络技术研究所,北京100053 [2]华为技术有限公司光产品线研发管理部,武汉430223

出　　处：《光通信技术》2025年第2期64-68,共5页Optical Communication Technology

基　　金：中国移动集团重点研发项目(R241140XC06、R24113HXC03)资助。

摘　　要：针对50G无源光网络(PON)系统部署中面临的32 d B功率预算需求及上行25 Gb/s与50 Gb/s多速率兼容难题,以及与现网GPON和10G PON系统共存的挑战,提出了一种支持高功率预算与多速率兼容的实时50G PON系统。系统在激光器中引入低频包络幅度调制技术,有效抑制了高功率传输引发的光纤非线性效应;在光线路终端(OLT)接收端,通过与多址接入控制(MAC)层协同的动态自适应光数字信号处理(oDSP)技术,实现了25 Gb/s和50 Gb/s上行速率的兼容;同时,基于空间光合分波技术,解决了50G PON与GPON、10G PON在同一PON端口的共存问题。实验结果表明:该系统功率预算达32 d B,满足C+等级标准;在无需增加额外前导开销的前提下,50G PON与现网GPON、10G PON可实现同一端口的共存与协同工作。To address the challenges in deploying 50G passive optical network(PON)systems—including the 32 dB power budget requirement,compatibility of 25 Gb/s and 50 Gb/s upstream rates,and coexistence with existing GPON and 10G PON systems,a real-time 50G PON system supporting high-power budget and multi-rate compatibility is proposed.The system introduces low-frequency envelope amplitude modulation in the laser to effectively suppress fiber nonlinear effects caused by high-power transmission.At the optical line terminal(OLT)receiver,dynamic adaptive optical digital signal processing(oDSP)technology collaboratively working with the multi-access control(MAC)layer achieves compatibility for 25 Gb/s and 50 Gb/s upstream rates.Additionally,spatial optical hybrid wavelength-division multiplexing technology enables coexistence of 50G PON with GPON and 10G PON on the same PON port.The experimental results show that the system achieves a 32 dB power budget,meeting the C+standard.Without additional pilot overhead,50G PON can coexist and operate collaboratively with existing GPON and 10G PON systems on the same port.

关 键 词：无源光网络 功率预算 多速率兼容 

分 类 号：TN929.1[电子电信—通信与信息系统]