Parallel Digital Backpropagation in Fiber Optics Considering Four-Wave Mixing Terms

被引：0

作者：

Abolfathimomtaz, Abbas ^{[1
]}

Ardakani, Masoud ^{[1
]}

Ebrahimzad, Hamid ^{[2
]}

机构：

[1] Univ Alberta, Dept Elect Engn, Edmonton, AB, Canada

[2] Huawei Technol Canada Co Ltd, Ottawa, ON, Canada

来源：

ICC 2023-IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS | 2023年

关键词：

Digital Backpropagation; Fiber Nonlinearity Compensation; Coupled NLSE; Split-Step Fourier Method; LIMITS;

D O I：

10.1109/ICC45041.2023.10278820

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

Digital backpropagation (DBP) is the most effective fiber optic compensation technique. While DBP can increase the achievable data rate, its high computational complexity prevents its use in real-time applications. Parallelization is one of the most promising techniques to allow real-time DBP. Existing parallel DBP (PDBP) are based on coupled nonlinear Schrodinger equation (NLSE), which only considers cross-phase modulation and discards the rest of the inter-channel impairments. Therefore, these methods lose their performance in today's wavelength-division multiplexing systems. We fill this gap by proposing a PDBP capable of working with regular NLSE and compensating for all fiber impairments, including four-wave mixing. We analytically derive the compensation equations for the parallel scheme and handle them efficiently to reduce the complexity. Our simulations show a significant improvement in the sense of optimal launched power, achievable data rate, and system reach over existing DBPs with comparable complexity.

引用

页码：3296 / 3301

页数：6