50 Gbit/s前传光模块关键技术研究与应用展望  

Research and application prospects on key technologies of 50 Gbit/s front-haul modules

作　　者：盛夏 马涛[2] 刘昊 冯佳[3] SHENG Xia;MA Tao;LIU Hao;FENG Jia(Research Institute of China Telecom Co.,Ltd.,Beijing 102209,China;China Telecom Corporation,Beijing 100045,China;Huawei Technologies Co.,Ltd.,Shanghai 201206,China)

机构地区：[1]中国电信股份有限公司研究院,北京102209 [2]中国电信股份有限公司,北京100045 [3]华为技术有限公司,上海201206

出　　处：《电信科学》2024年第5期23-37,共15页Telecommunications Science

摘　　要：随着全球5G网络的规模化商用及移动互联网流量的迅猛增长,更为丰富的无线频谱资源得以释放,高速率光模块在无线前传网络中的需求日益凸显。聚焦于50 Gbit/s前传光模块的关键技术,深入剖析了前传网络的两种主要组网方式,分析了前传链路的典型传输距离及链路损耗情况,探讨了10 km场景下粗波分复用(coarse wavelength division multiplex,CWDM)中各波长的最大色散值和最小色散值,并研究了相应的色散补偿策略,通过实验验证了不同多径干扰(multi-path interference,MPI)强度下系统光功率代价的变化,详细分析了多径干扰噪声对系统误码性能的潜在影响,为前传光模块参数的优化提供了重要的理论依据。此外,深入研究了50 Gbit/s前传光模块的光电芯片技术方案,对多种不同类型光模块的参数性能进行了严格的测试,提出了针对50 Gbit/s前传光模块光电接口参数的标准化建议,详细介绍了当前50 Gbit/s前传光模块在国内外的标准现状,并展望了未来应用的发展趋势。With the large-scale commercial use of the global 5G network and the rapid growth of mobile Internet traffic,more abundant wireless spectrum resources can be released,and the demand for high-speed optical modules in wireless front-haul networks is increasingly prominent.Focusing on the key technologies of 50 Gbit/s front-haul optical modules,two main networking methods were deeply analyzed,the typical transmission distance and link loss were analyzed,the maximum and minimum dispersion values of coarse wave division multiplexing(CWDM)wavelengths in a 10 km scenario were explored,and the corresponding dispersion compensation strategies were studied.Through experiments,the changes in optical power penalty of different multi-path interference(MPI)were verified,and the potential impact of MPI noise on error performance was analyzed in detail.In addition,deep research on the optoelectronic chip scheme of 50 Gbit/s modules was conducted,the parameters of various types of optical modules were rigorously tested,standardized suggestions for the optoelectronic interface parameters of 50 Gbit/s front-haul modules were proposed,the current standard status of 50 Gbit/s modules at home and abroad was detailed,and the development trend of future applications was prospected.

关 键 词：5G网络 50 Gbit/s前传光模块 色散 多径干扰 光电接口参数 

分 类 号：TN919[电子电信—通信与信息系统]