Demonstration of Terabit/s LAN-WDM for the Evolution of B5G/6G Fronthaul Networks

Demonstration of Terabit/s LAN-WDM for the Evolution of B5G/6G Fronthaul Networks

Intensity modulation/direct detection (IM/DD) and coherent schemes are two kinds of promising solutions to achieve the evolution for B5G/6G fronthaul networks. IM/DD has more mature commercial deployment applications for short-reach applications with lower...

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Bibliographic Details
Main Authors: Jiao Zhang, Qingsong Wang, Junhao Zhang, Xiang Liu, Bingchang Hua, Jian Chen, Zhigang Xin, Yuancheng Cai, Mingzheng Lei, Yucong Zou, Liang Tian, Guo Zhao, Meihua Bi, Min Zhu
Format: Article
Language:English
Published: IEEE 2023-01-01
Series:IEEE Photonics Journal
Subjects:
B5G/6G
fronthaul network
terabit/s
dispersion
Local-area-network-wavelength-division-multiplexing
eight-level amplitude modulation
Online Access:https://ieeexplore.ieee.org/document/10198557/
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Summary:Intensity modulation&#x002F;direct detection (IM&#x002F;DD) and coherent schemes are two kinds of promising solutions to achieve the evolution for B5G&#x002F;6G fronthaul networks. IM&#x002F;DD has more mature commercial deployment applications for short-reach applications with lower costs and simpler configurations compared with coherent solutions. In this article, we experimentally demonstrate a local area network-wavelength division multiplexing (LAN-WDM) IM&#x002F;DD access system with a record bit rate of 2 Tb&#x002F;s (250 Gbit&#x002F;s &#x00D7; 8) probabilistic shaping eight-pulse amplitude modulation (PS-PAM-8) signal with joint equalization techniques to support the evolution of future B5G&#x002F;6G mobile fronthaul networks. Considering the 20&#x0025; Soft Decision Forward Error Correction (SD-FEC) threshold with the bit error rate (BER) of 2 &#x00D7; 10<sup>&#x2212;2</sup>, we realize a record net bit rate of 1.6 Tb&#x002F;s over 5 km fiber. This system can potentially support a 12-wavelengths transmission with the total line rate of 3 Tb&#x002F;s (250 Gbit&#x002F;s &#x00D7; 12). Moreover, we analyze the challenges of the evolution, usage scenarios, digital signal processing (DSP) implementation, transmission rate and distance, and the tolerance of dispersion with different wavelengths. The LAN-WDM can be considered as a feasible and potential candidate scheme to meet the evolution and deployment of B5G&#x002F;6G Terabit&#x002F;s fronthaul networks.
ISSN:1943-0655

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