面向数据中心光互连的高速光传输技术

面向数据中心光互连的高速光传输技术

张帆，朱逸萧

北京大学电子学系区域光纤通信网与新型光通信系统国家重点实验室

摘要：数据中心光互连场景可分为数据中心内部和数据中心之间2大类。对于数据中心内部光互连，利用新型调制方案、高性能光器件和高速数字信号补偿算法是提升单通道速率的主要方式；对于数据中心之间光互连，结合单边带调制和非线性补偿算法克服色散功率衰落是重要研究方向。未来数据中心的升级依赖于光电器件和数字信号处理的共同进步。
关键词：光互连；直接检测；自相干检测；数字信号处理

High-Speed Transmission Technologies for Data Center Optical Interconnection

ZHANG Fan, ZHU Yixiao

State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronics

Abstract: Intra-data center and inter-data center optical interconnects are two categories of data-center application scenarios. For intra-data center optical interconnect, novel modulation schemes, high-performance optical devices and compensation algorithms for high-speed digital signal are enabling technologies to increase the line-rate; while for inter-data center optical interconnect, the combination of single-sideband modulation and digital nonlinear mitigation algorithm is the key approach to overcome the fiber dispersion induced power fading effect. The upgradation of future data-center interconnect relies on the development of both optoelectronic devices and digital signal processing.
Keywords: optical interconnects; direct detection; self coherent detection; digital signal processing