Perturbation-Based Joint SPM and XPM Compensation for Superchannel System

IF 2.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Photonics Technology Letters Pub Date : 2024-10-04 DOI:10.1109/LPT.2024.3474479

Zonglong He;Ali Mirani;Magnus Karlsson;Jochen Schröder

引用次数: 0

Abstract

In contrast to digital backpropagation (DBP), perturbation-based nonlinear compensation (PB-NLC) is a low-complexity alternative to mitigate fiber Kerr nonlinearity. In this letter, we experimentally demonstrate a novel receiver-side perturbation approach to cancel the self-phase modulation and cross-phase modulation for superchannel systems using three independent receivers. With the inverse perturbation theory, we develop a nonlinear compensation model that does not require knowing the transmitted symbols and therefore avoids the penalty from the estimation error. We implement the PB-NLC in a

$3\times 24.5$

GBaud 64-QAM comb-based superchannel system spaced at 25 GHz. Compared to chromatic dispersion compensation, the full PB-NLC achieves a 0.2 dB Q2 factor gain after 1200 km transmission, which is equivalent to the single-channel DBP operating at 1 step per span.

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基于扰动的超信道系统 SPM 和 XPM 联合补偿

与数字反向传播（DBP）相比，基于扰动的非线性补偿（PB-NLC）是减轻光纤克尔非线性的低复杂度替代方法。在这封信中，我们通过实验演示了一种新颖的接收器侧扰动方法，利用三个独立接收器消除超信道系统的自相位调制和跨相位调制。利用反扰动理论，我们开发了一种非线性补偿模型，它不需要知道传输符号，因此避免了估计误差带来的惩罚。我们在间隔为 25 GHz 的 $3\times 24.5$ GBaud 64-QAM 基于梳状的超级信道系统中实现了 PB-NLC 。与色度色散补偿相比，完整的 PB-NLC 在 1200 公里传输后实现了 0.2 dB 的 Q2 因子增益，相当于以每跨 1 步工作的单通道 DBP。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.