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超出300Gb/s的光学互连超过10公里的SSMF在C频段,由光学遗留侧带信号启用

Qibing Wang, Chao Li, Chao Yang

|February 28, 2025

概括

这项研究证明了高速光学数据传输使用遗留侧带脉冲振幅调制 (PAM) 信号超过10公里光纤. 先进的等分技术使得每波长的数据速率超过350 Gb/s.

科学领域:

光学通信是指光学通信的应用.
信号处理信号处理
光纤光学是指光纤的使用.

背景情况:

高速光学互连对于数据中心至关重要.
需要先进的调制格式和均衡来克服传输损伤.

研究的目的:

通过实验证明在标准单模光纤上传输高容量的光信号.
调查先进的均衡技术对缓解线性和非线性扭曲的有效性.

主要方法:

产生一个单波长120 Gbaud PAM4遗留侧带 (VSB) 信号.
使用光学过来创建VSB信号.
使用线性前,前强调和二级非线性均等器.
在C频段10公里的标准单模光纤 (SSMF) 上进行传输.
用概率星座塑造PAM8信号进行实验.

主要成果:

120Gbaud PAM4 VSB信号在10公里的SSMF上成功传输,低于7%的空中硬决策前置错误纠正 (HD-FEC) 位错误率 (BER) 门.
使用PAM8信号实现了超过350 Gb/s的最大线路数据速率,低于19%的上空软决策前置错误校正 (SD-FEC) BER值.
证明了组合均等技术在打击信号扭曲方面的有效性.

结论:

拟议的系统为10公里的光学互连提供了可行的解决方案.
在C频段,每波长可达到超过200 Gb/s的数据速率.
高级等级是实现光通信系统中更高数据速率的关键.

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