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DC25_PAPER_Track3_DesignAndPerformanceEvaluationOfA_kang_V3.pdf

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1、 Information Classification:General Design and Performance Evaluation of a 1.6Tbps Linear Direct Drive System Based on Silicon Photonics Modulator Haohao Kang,Bytedance Jiejiang Xing,Bytedance Lei Guo,Bytedance Dayong Shen,Bytedance Lantian Liao x-phor Shaohui Zhang Bytedance Feng Luo,Bytedance Info

2、rmation Classification:General Abstract Through extensive testing of the 800Gbps Low Power Optics(LPO)system,it has been verified that the LPO performance based on the Silicon Photonics Modulator scheme is the best and has been validated in small batches.In the 1.6Tbps scenario,LPO systems remain on

3、e of the key areas of exploration in the industry due to their low power consumption advantages.To maintain signal integrity in higher speed communication,it is necessary to maintain high linearity.As the speed increases,the high-frequency nonlinearity of the Driver chip will increase,while the cont

4、radiction between the driving voltage(Vpi)and bandwidth of the Silicon Photonics Modulator becomes more significant.Therefore,how to balance the linearity,bandwidth,and optical multi-path interference of the Silicon Photonics(SiP)will seriously restrict the feasibility of the 1.6Tbps LPO system.Auth

5、ors Biography Haohao Kang is a optical network engineer at ByteDance.He is familiar with data center optical module solutions and has a good understanding of system end-to-end link characteristics.He has 6 years of experience in data center optical module.Jiejiang Xing is a staff engineer at ByteDan

6、ce,focusing on high-speed optical chip design.He holds a Ph.D.and has 10 years of working experience in the Silicon Photonics field.Dayong Shen is a high-speed signal system engineer at ByteDance,focusing on high-speed system solutions for data centers.Currently,he has 17 years of working experience

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1. **800G LPO验证**:字节跳动800G LPO模块(112Gbps/lane)经测试,BER达1e-9,FEC错误<3,满足TP2规范,小批量部署稳定。 2. **1.6T LPO优势**:相比DSP方案,1.6T LPO功耗降68%,成本省20%,但需解决SiP调制器带宽(>45GHz)、线性及多径干扰问题。 3. **关键挑战**:高速下SiP调制器Vpi与带宽矛盾突出,驱动芯片高频非线性加剧,需平衡带宽、线性及光多径干扰。 4. **测试结论**:PIC带宽>45GHz、优化驱动预加重可提升BER,但TP2眼图指标与BER需权衡,未来需优化224G SiP设计。
**1.6Tbps LPO可行吗?** **SiP调制器有何挑战?** **如何优化LPO性能?**
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