352-Gbit/s single line rate THz wired transmission based on PS-4096QAM employing hollow-core fiber

Junjie Ding, Yuxuan Tan, Yanyi Wang, Jiao Zhang, Menghui He, Feng Zhao, Li Zhao, Wen Zhou, Yiwei Shi, Min Zhu, Jianjun Yu

Abstract: We successfully demonstrate 32-Gbaud Probabilistically Shaped 4096-ary Quadrature Amplitude Modulation (PS-4096QAM) TeraHertz (THz) signal wired transmission at 325 ​GHz over the 1-m Hollow-Core Fiber (HCF) in a photon-assisted THz-wave communication system. By employing advanced Digital Signal Processing (DSP) and the PS technique, the 352-Gbit/s line rate (288-Gbit/s net rate) delivery with a net Spectral Efficiency (SE) of 9 bit/s/Hz is realized in the experiment, satisfying the 0.86-Normalized Generalized Mutual Information (NGMI) Low-Density Parity-Check (LDPC) threshold. © 2021 Elsevier Science. All rights reserved.