400G光模块：选择、挑战与机遇.pdf

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1、Title:400G Optics:Choices,Challenges,and OpportunitiesPresenter:J.Zhou OCP 2025Ligent Confidential|1/12A Brief Description of the Talk:Wereview400GOpticsintheaspectofChoices,Challenges,andOpportunities.Weshowthedemonstrationof400G/lanewithahighbandwidth efficient thin-film lithium niobate Mach-Zehnd

2、er modulator.Highperformance is achieved using the modulator and practical equalizations,confirming the feasibility of 400G/lane applications.OCP 2025Title:400G Optics:Choices,Challenges,and OpportunitiesPresenter:J.ZhouLigent Confidential|2/12Market Demands for Optical TransceiversSales of Ethernet

3、 transceivers for AI applications will account for most of the demand for high speed optics in 2025-2029.3.2T will reach 1.2Billion in 2027 and 2.8Billion in 2029Source:LightCounting,CLOUD DATA CENTER OPTICS JULY 2024OCP 2025Ligent Confidential|3/12400G Optics:Choices,Challenges an Opportunities App

4、lications:Enable 3.2T(8x400G)or/and 6.4T(16x400G)rate solutions Lower cost,lower complexity 800G(2x400G)and 1.6T(4x400G)solutions Protentional for CPO/NPO applications with Nx400G PAM4)linear interfaces Interfaces Line Interface:212.5Gbaud PAM4 with KP4 FEC,227Gbaud PAM4 with KP4+Haming-code FEC Hos

5、t Interface:164Gbaud PAM6 with KP4 FEC,142Gbaud PAM8 with KP4 FEC Modulation Technologies Materials:TFLN vs InP Modulation technology:MZM vs EAM Integration:Traditional vs Heterogenous integration The module form factors OSFP_XD:16x200G PAM4 host interface;8x400G PAM4 line interfaces OSFP:8x400G PAM

6、6/PAM8 host interface;8x400G PAM4 line interfaces CPO/NPO:Nx400G PAM4 linear interfacesOCP 2025Historically,symbol rate enhancement has proven more cost-effective than parallel scalingapproaches-the latter requiring multiplication of optical/electrical components and exhibitingnear-linear cost-power