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Updated: May 5, 2026

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101.47-b/s/Hz频谱效率传输使用概率造型 16-QAM 在7核3模式光纤中
Optics express
|February 20, 2026
概括
这项研究展示了一种新的7核,3模式光纤系统,使用概率造型16平方振幅调制 (PS-16QAM) 来提高数据容量. 该系统实现了高光谱效率,为下一代超高容量光通信铺平了道路.
科学领域:
- 光学通信是指光学通信.
- 信息理论 信息理论
- 材料科学 材料科学 材料科学
背景情况:
- 全球数据流量的增长给传统的单模光纤系统带来了压力,接近香农极限.
- 未来的通信需求需要突破目前光纤容量之外的突破.
研究的目的:
- 实验性地演示一个多核,少数模式的光纤系统,利用概率造型来提高容量.
- 验证用于超高速数据传输的先进调制和复杂技术的集成.
主要方法:
- 采用概率造型的16平方振幅调制 (PS-16QAM) 与麦克斯韦尔-博尔兹曼分布,以优化能量分配.
- 使用了7核,3模式纤维,具有分级索引配置和沟辅助结构,以最大限度地减少核心间交叉声.
- 集成波长分割多重复合 (WDM),极化分割多重复合 (PDM) 和空间分割多重复合 (SDM) 进行并行传输.
主要成果:
- 在一个80.6公里长的链路上实现了126个频道的并行传输,并提供差异群延迟补偿.
- 实现了用于频率偏移估计,同步和MIMO-LMS等级的高级算法,具有最大概率的相位恢复.
- 在25.5%的软决策前置错误校正 (FEC) 值下,达到101.47 b/s/Hz的最大光谱效率.
结论:
- 验证了在多核,少数模式光纤系统中概率造型的有效性.
- 证明了通往下一代超高容量光通信系统的可行途径.
- 为推进未来光网络基础设施提供了关键的技术支持.
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