Fast and Accurate Waveform Modeling of Long-Haul Multi-Channel Optical Fiber Transmission Using a Hybrid Model-Data Driven Scheme

Yang, Hang; Niu, Zekun; Zhao, Haochen; Xiao, Shilin; Hu, Weisheng; Yi, Lilin

doi:10.1109/jlt.2022.3168698

Cited by 20 publications

(2 citation statements)

References 29 publications

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“…To address this problem, numerous NLI compensation (NLC) algorithms have been proposed, such as digital back-propagation (DBP), 5 – 8 perturbative nonlinear compensation (PNC), 9 – 13 Volterra series nonlinear equalizer (VSNE), 14 , 15 phase-conjugate twin wave, 16 , 17 and machine learning (ML) 18 – 24 Among these schemes, DBP and VSNE require to perform multiple fast Fourier transformation (FFT) and inverse FFT (IFFT) operations, which incurs a relatively higher computational complexity. The NLC performance of PCTM will be at the expense of 50% spectrum efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Low-complexity fiber nonlinear distortion mitigation for long-haul optical transmission based on transformer and triplets

Meng,

Cai,

Zhang

et al. 2024

Opt. Eng.

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We propose and demonstrate an intrachannel fiber nonlinear impairments compensation scheme based on the transformer and simplified triplets. In comprehensive numerical experiments with a transmission distance of 1200 km for 30-GBaud dualpolarization 16-ary quadrature amplitude modulation signals, the Q factor gains of the proposed scheme are 2.48, 1.73, 0.98, and 0.31 dB compared to chromatic dispersion compensation, digital back propagation using 1-steps-per-span split-step Fourier method (1-StSp DBP), deep neural network (DNN), and 10-StSp DBP, respectively. The implementation complexity of the proposed scheme is reduced by 65% and 43% compared to 10-StSp DBP and DNN, respectively.

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Section: Introductionmentioning

confidence: 99%

“…For further decreasing the computational complexity, a system-independent NLC scheme based on the bidirectional long short-term memory (Bi-LSTM) is proposed in Ref. 24. As a sequential computation, the Bi-LSTM has a higher time complexity and poor real-time performance.…”

Section: Introductionmentioning

confidence: 99%

Low-complexity fiber nonlinear distortion mitigation for long-haul optical transmission based on transformer and triplets

Meng,

Cai,

Zhang

et al. 2024

Opt. Eng.

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The Digital Twin Framework for the Physical Wideband and Long‐Haul Optical Fiber Communication Systems

Yang,

Niu,

Fan

et al. 2024

Laser & Photonics Reviews

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Digital twin (DT) modeling is essential to optical fiber communication systems, particularly for enhancing system performance, controlling the system in real time, and understanding signal nonlinearity. Conventional split‐step Fourier method ‐based simulations, however, struggle with wide‐band transmissions, plagued by increasing complexity and inherent biases due to inconsistent link parameter availability. Addressing these challenges, a hybrid data‐driven and model‐driven DT approach for the wide‐band and long‐haul physical systems with various system effects is developed. The approach utilizes a neural network (NN) to capture fiber nonlinear features as well as biased perturbations as “lumped” stochastic noises while offloading the linear effects to modules described by physical models of link elements. The model, tested in a 30.5‐Tbps 1200 km fiber transmission link with 40 channels, achieves a mean Q factor error of less than 0.1 dB and a maximum runtime of 1.3 s for NN processing under various launch powers, transmission lengths, and optical signal‐to‐noise ratios. Furthermore, the study has implemented a nonlinear compensation algorithm on the DT model, yielding a consistent enhancement in experimental data. The accuracy and adaptability of the DT model underline its suitability for planning, design, and optimization within the physical optical fiber communication systems.

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Accurate and Efficient Optical Fiber WDM Transmission Modeling Using the Encoder-Only Transformer with Feature Decoupling Distributed Method

Shi,

Yang,

Niu

et al. 2023

2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings (ACP/POEM)

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Fast and Accurate Waveform Modeling of Long-Haul Multi-Channel Optical Fiber Transmission Using a Hybrid Model-Data Driven Scheme

Cited by 20 publications

References 29 publications

Low-complexity fiber nonlinear distortion mitigation for long-haul optical transmission based on transformer and triplets

Low-complexity fiber nonlinear distortion mitigation for long-haul optical transmission based on transformer and triplets

The Digital Twin Framework for the Physical Wideband and Long‐Haul Optical Fiber Communication Systems

Accurate and Efficient Optical Fiber WDM Transmission Modeling Using the Encoder-Only Transformer with Feature Decoupling Distributed Method

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