基于50 Gbit/s Combo PON OLT光组件的研究  

Design and Study on 50 Gbit/s Combo PON OLT Optical Module

作　　者：成璇璇 石川 马洪勇 梅晓鹤 丁深 秦强 CHENG Xuanxuan;SHI Chuan;MA Hongyong;MEI Xiaohe;DING Shen;QIN Qiang(Accelink Technologies Co.,Ltd.,Wuhan 430074,China)

机构地区：[1]武汉光迅科技股份有限公司,武汉430074

出　　处：《光通信研究》2025年第2期80-85,共6页Study on Optical Communications

基　　金：国家重点研发计划资助项目(2019YFB180091)。

摘　　要：【目的】随着视频业务逐渐成为宽带网络的核心支柱,无源光网络(PON)技术迅速发展,从传统的家庭宽带接入领域迈向政企、工业智能制造和远程医疗等更为广泛的应用领域,由此对网络的带宽、时延、丢包率和抖动等业务质量要求日益苛刻。在这样的背景下,50 Gbit/s的下一代光接入网技术应运而生,50 Gbit/s PON不仅要提供超过10 Gbit/s PON 4倍以上的接入带宽,还需强化业务支撑能力、网络安全防护以及确保与现有10 Gbit/s PON技术的兼容性和平滑演进。在实现的过程中,光发射组件的研发尤为关键。【方法】文章重点介绍了一种基于混合集成封装技术的50 Gbit/s Combo PON光线路终端(LOT)光组件。这款光组件通过折叠的光路设计,解决了发射端和接收端多通道波长合分波的技术难题,显著降低了收发器件在同一管壳内的串扰问题。【结果】通过精心设计的4通道小型可插拔接口(QSFP)28封装尺寸模块,实现了在金属气密性管壳内的3发3收功能。同时,得益于先进的优化设计,发射端对接收端的串扰明显降低,效果提升达到20~30 dB。这一重要突破不仅提高了光组件的性能,也为50 Gbit/s PON的商用部署奠定了坚实基础。【结论】测试结果表明,文章所提光组件的波长性能完全符合国际电信联盟-电信标准化部门(ITU-T)G.9804.3国际标准的要求,其工作眼图和灵敏度均达到了预期指标。这意味着50 Gbit/s Combo PON OLT光组件已经具备了在实际网络环境中应用的能力。展望未来,随着技术的不断进步和应用需求的持续增长,50 Gbit/s PON将在推动宽带网络升级、增强业务支撑和提升用户体验等方面发挥重要作用。期待这一领域继续涌现更多创新成果,共同推动光网络技术的繁荣发展。【Objective】As video services gradually become the core pillar of broadband networks,Passive Optical Network(PON)technology has rapidly developed,expanding from the traditional field of home broadband access to a wider range of application areas such as government and enterprise,intelligent manufacturing in industry,and telemedicine.Consequently,the requirements for network bandwidth,latency,packet loss rate,and jitter in terms of service quality have become increasingly stringent.In this condition,the next-generation optical access network technology with a speed of 50 Gbit/s has emerged.The 50 Gbit/s PON is not only required to provide an access bandwidth more than four times that of the 10 Gbit/s PON,but also needs to enhance the service support capabilities,network security protection,and ensure compatibility and smooth evolution with the existing 10 Gbit/s PON technology.In the implementation process,the development of optical transmitter components is particularly crucial.【Methods】The 50 Gbit/s Combo PON Optical Line Terminal(OLT),presented in this study,leverages hybrid integrated package technology to address key challenges such as multi-channel wavelength combination,signal splitting,and crosstalk minimizing.Through meticulous optical path simulations and crosstalk analyses,the device successfully achieves a balance between performance and efficiency.【Results】By means of a meticulously designed 4-channel QSFP28 package size module,the functionality of 3 transmitters and 3 receivers within a metal hermetic tube has been realized.At the same time,thanks to advanced optimization design,the crosstalk from the transmitter to the receiver has been significantly reduced,with an improvement of 20 to 30 dB.This important breakthrough not only enhances the performance of the optical components,but also lays a solid foundation for the commercial deployment of 50 Gbit/s PON.【Conclusion】The test results indicate that the wavelength performance of the optical components proposed in the article fully com

关 键 词：50 Gbit/s Combo无源光网络 光线路终端 光发射组件 

分 类 号：O436[机械工程—光学工程]