对连贯光纤通信系统的数字反向传播的优化,使用交互图像方法中的第四阶Runge-Kutta
Optics express
|January 29, 2025
概括
本研究引入了一种使用RK4IP算法的新数字反向传播 (DBP) 方法,增强光纤系统中的非线性等分. 基于RK4IP的优化DBP显示了相对于传统SSFM方法的Q-因子显著改善.
科学领域:
- 光学通信是指光学通信.
- 信号处理 信号处理
背景情况:
- 数字反向传播 (DBP) 算法对于在连贯光纤系统中等同色谱分散和非线性至关重要.
- 基于传统的分阶段里埃法 (SSFM) 的DBP的非线性等分能力有限.
研究的目的:
- 为了提高DBP算法的非线性等分性能.
- 在DBP中研究用第四级Runge-Kutta在交互图像 (RK4IP) 方法取代SSFM的有效性.
- 使用贝叶斯优化算法 (BOA) 优化DBP系数.
主要方法:
- 在DBP算法中用RK4IP方法取代SSFM.
- 采用贝叶斯优化算法 (BOA) 来优化基于RK4IP的DBP和基于SSFM的DBP的系数.
- 在9×100公里的标准单模光纤 (SSMF) 20Gbaud 16QAM传输系统上进行了实验.
主要成果:
- 基于RK4IP (CO-RK4IP) 的DBP算法表现出卓越的性能.
- 与基于系数优化的SSFM (CO-SSFM) 的DBP算法相比,CO-RK4IP实现了0.89dB的最大Q因子改进.
- 在相当的计算复杂度下观察到性能增长.
结论:
- RK4IP方法是一种有效的递归方法,用于增强DBP算法.
- 经系数优化的RK4IP为光纤通信系统提供了非线性等分的显著改进.
- 这种进步有助于更强大,更有效的光通信技术.
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