通过自适应式交联干扰取消进行MIMO等效,以减轻SDM传输中模式依赖性损失的影响,通过合的多核光纤传输
Optics express
|August 13, 2025
概括
我们开发了一种新型的多输入多输出 (MIMO) 均等器,可以自适应地取消空间分割复杂 (SDM) 传输中的交联干扰. 这项技术将传输距离延长17%,并提高了信号质量,克服了模式依赖性损失 (MDL).
科学领域:
- 光学通信是指光学通信.
- 信号处理 信号处理
- 光纤光学是指光纤的使用.
背景情况:
- 空间划分多重复合 (SDM) 能够实现更高的数据速率,但受到交联式干扰和模式依赖损失 (MDL) 的影响.
- 现有的均衡器努力有效地减轻这些损害,限制传输距离和性能.
研究的目的:
- 为SDM传输提出和评估一种新的多输入多输出 (MIMO) 均衡器架构.
- 为了减轻模间干扰和模式依赖损失 (MDL),无需代处理.
主要方法:
- 设计了一种两阶段的MIMO过器架构:一个用于补偿合和空间模式分散,另一个用于自适应式跨式干扰取消.
- 使用随机梯度下降和反向传播实现了MIMO波器系数的自适应控制.
- 通过对32Gbaud极化-分割多重复方位相位转换 (PDM-QPSK) 信号在4核合光纤 (4-CCF) 上进行数值模拟来评估性能.
主要成果:
- 拟议的MIMO均衡器在前向错误校正 (FEC) 后实现了17%的更长传输距离,没有比特错误,为1dB/span MDL.
- 在波长分割多重传输和SDM传输场景中,均衡器在7280公里时将FEC前的Q值提高了0.8dB.
结论:
- 拟议的MIMO等分器架构有效地弥补了SDM传输中的联运干扰和MDL.
- 这种非代的自适应等级技术为未来光网络的传输距离和信号质量提供了显著的改进.
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