Exponential-Memory-Polynomial-Based Nonlinear Equalizer for C-Band IM/DD Systems

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Photonics Technology Letters Pub Date : 2024-09-16 DOI:10.1109/LPT.2024.3461752

Xing Liu;Chengju Hu;Yi Cai;Jian Zhao

引用次数: 0

Abstract

We propose a novel exponential memory polynomial decision-feedback equalizer (EMP-DFE) for nonlinear compensation in intensity modulation and direct detection (IM/DD) systems. Different structures of EMP are investigated and the proposed one achieves the best performance by including both self- and cross-beating terms of all nonlinear orders while balancing the complexity. Experiments of a 96-112Gbit/s PAM-4 system over 10-30km single-mode fiber show that the proposed EMP-DFE outperforms diagonally-pruned Volterra DFE, diagonally-pruned absolute-term Volterra DFE and trigonometric memory polynomial DFE in terms of both ultimate performance and the performance at the same complexity.

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基于指数记忆多项式的 C 波段 IM/DD 系统非线性均衡器

我们提出了一种新型指数记忆多项式决策反馈均衡器（EMP-DFE），用于强度调制和直接检测（IM/DD）系统中的非线性补偿。对不同结构的 EMP 进行了研究，所提出的 EMP 在平衡复杂性的同时，包含了所有非线性阶次的自打击和交叉打击项，从而实现了最佳性能。在 10-30km 单模光纤上运行的 96-112Gbit/s PAM-4 系统的实验表明，就最终性能和相同复杂度下的性能而言，所提出的 EMP-DFE 优于对角截断 Volterra DFE、对角截断绝对项 Volterra DFE 和三角记忆多项式 DFE。

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来源期刊

IEEE Photonics Technology Letters 工程技术-工程：电子与电气

CiteScore

5.00

自引率

3.80%

发文量

404

审稿时长

2.0 months

期刊介绍： IEEE Photonics Technology Letters addresses all aspects of the IEEE Photonics Society Constitutional Field of Interest with emphasis on photonic/lightwave components and applications, laser physics and systems and laser/electro-optics technology. Examples of subject areas for the above areas of concentration are integrated optic and optoelectronic devices, high-power laser arrays (e.g. diode, CO2), free electron lasers, solid, state lasers, laser materials'' interactions and femtosecond laser techniques. The letters journal publishes engineering, applied physics and physics oriented papers. Emphasis is on rapid publication of timely manuscripts. A goal is to provide a focal point of quality engineering-oriented papers in the electro-optics field not found in other rapid-publication journals.

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