光通信研究Issue(1)：1-7,7.DOI:10.13756/j.gtxyj.2026.240241
有限波长转换全光脊叶数据中心网络设计
Design of All-Optical Spine-Leaf Data Center Networks with Limited Wavelength Conversion
摘要
Abstract
[Objective]The wavelength conflict of different optical channels tends to occur in the All-Optical Spine-Leaf(AO-SL)Data Center Network(DCN)that adopts a multi-stage Wavelength Selective Switches(WSS)cascading.This will cause a large number of service requests to be blocked,thus significantly influencing the spectral utilization efficiency of the DCN.To ad-dress this issue,Tunable Wavelength Conversion(TWC)modules can be used in the AOSL DCN to enable the conversion of each wavelength to any other wavelength whenever wavelength conflict occurs.However,this will also significantly increase the total cost of the AOSL DCN.Therefore,this paper aims to find a balance between network performance and networking cost by developing the AOSL DCNs with limited wavelength conversion.[Methods]In this paper,we propos two different architec-tures for the AOSL DCN with limited wavelength conversion,including wavelength conversion allowed on partial WSS and wave-length conversion allowed on specific wavelengths,respectively.The former one deploys the TWC modules with full wavelength conversion capacity,merely for certain spine WSSs.In contrast,the latter one deploys TWC modules that are configured to per-mit specific wavelength conversion for all of the Spine WSSs.In addition,this paper also proposes corresponding Routing,Wave-length and Time Slot Allocation(RWTA)algorithms for the static lightpath service deployment problem of these two AOSL DCN architectures.[Results]Simulation results show that both network architectures proposed in this paper can achieve perfor-mance close to that of the all-optical spine-leaf data center network with full wavelength conversion capabilities in terms of overall Task Completion Time(TCT)and total WSS reconfiguration times.[Conclusion]Our AOSL DCN proposed with limited wavelength conversion effectively guarantees network performance while reducing the networking costs.关键词
数据中心/波长交换网络/波长转换/路由、波长和时隙分配Key words
data center/wavelength switched network/wavelength conversion/RWTA分类
信息技术与安全科学引用本文复制引用
杨可歆,黄婷婷,周鹏,李鑫,闫颖,李泳成..有限波长转换全光脊叶数据中心网络设计[J].光通信研究,2026,(1):1-7,7.基金项目
国家重点研发计划资助项目(2023YFB2905505) （2023YFB2905505）
国家自然科学基金资助项目(62271338) （62271338）
