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Propagation Speed of Electromagnetic Waves01:30

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Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
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相关实验视频

Updated: Jan 8, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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针对SDM连贯光通信系统的加速光学MIMO等级化.

Xiuquan Cui, Linsheng Fan, Jianyu Wang

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    |December 19, 2025
    PubMed
    概括
    此摘要是机器生成的。

    本研究介绍了一种试点辅助的光学MIMO系统,用于打击高速光通信中的交叉通话,频率偏移和相位噪声. 这种新的方法可以实现高效的实时补偿,提高系统性能.

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    科学领域:

    • 光学通信是指光学通信.
    • 信号处理 信号处理
    • 信息理论 信息理论

    背景情况:

    • 空间分割复杂化 (SDM) 系统面临通道交叉声,增加功耗和延迟.
    • 光学MIMO处理器的实时重新配置在具有多个损伤的时间变化的通道中具有挑战性.

    研究的目的:

    • 为SDM连贯光学系统提出一个试点支持的光学MIMO联合补偿计划.
    • 为了同时解决通道交叉声,频率偏移 (FO) 和相位噪声 (PN).

    主要方法:

    • 嵌入频域试验音调到数字子载波多重复合 (DSCM) 信号中,以创建一个复合传输矩阵.
    • 动态控制的马赫-泽恩德干扰仪 (MZI) 阶段变换器用于光学模式脱.
    • 对于级联光学MIMO处理器,使用梯度算法 (GD,NAG,Adam,Lookahead) 实施分阶段优化策略.

    主要成果:

    • 阶段式优化策略显著加快了收,Nesterov的加速梯度 (NAG) 在20次代中收.
    • 拟议的光学MIMO方案显示,对于800Gb/s的DP 16-QAM信号,最低0.2 dB的OSNR灵敏度处罚.

    结论:

    • 试点辅助的光学MIMO方案有效地弥补了SDM系统中的交叉声,FO和PN.
    • 这种方法为需要实时处理和低延迟的高容量光通信系统提供了可行的解决方案.