Details

Autor(en) / Beteiligte

• Chen, Qinghui
• Liu, Kexiong
• Zhao, Li
• Wen, Hong

Titel

Demonstration of IM/DD 3-Tbit/s PS-PAM8 transmission with wavelength and mode multiplexing based on neural network equalizer

Ist Teil von

• Optics and laser technology, 2024-09, Vol.176, Article 110935

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2024

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •We have experimentally achieved 3-Tbit/s net rate PS-PAM8 signal transmission over 20-m MMF by combing 4 modes MDM with 8 carriers WDM.•NN equalizer obtains 1.6-dB receiver sensitivity gain at the 0.9-NGMI SD-FEC threshold.•The result shows the superiority of the proposed MISO NN equalizer in eliminating both the modal crosstalk and nonlinear distortions in the MDM system. We experimentally demonstrate 8-channel wavelength division multiplexing (WDM) signal transmission in 4 modes over 20-m multimode fiber (MMF) in an intensity modulation and direct-detection (IM/DD) system. By combining the probabilistic shaping (PS) technique with high order pulse amplitude modulation (PAM) format, 40-GBaud PS-PAM8 signal transmission in the WDM + MDM IM/DD system achieves a total net bit rate of 3-Tbit/s. With the aid of a multiple input single output (MISO) neural network (NN) equalizer, we obtain a 1.6-dB receiver sensitivity gain compared with traditional digital signal processing (DSP), including multiple input multiple outputs (MIMO) time domain equalizer (TDE).