Transmission of 200 Tb/s (375 × 3 × 178.125 Gb/s) PDM-DFTS-OFDM-32QAM super channel over 1 km FMF

Ming LUO1,Qi MO1,Xiang LI1,Rong HU1,Ying QIU1,Cai LI1,Zhijian LIU1,Wu LIU1,Huang YU1,Wei DU1,Jing XU2,Zhixue HE1,Qi YANG1,*(),Shaohua YU1

1. State Key Laboratory of Optical Communication Technologies and Networks, Wuhan Research Institute of Posts and Telecommunications, Wuhan 430074, China 2. School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China

Download: PDF(1230 KB) HTML
Export: BibTeX | EndNote | Reference Manager | ProCite | RefWorks

Abstract

A few-mode fiber (FMF) is designed to support three spatial modes (LP₀₁, LP_11a, and LP_11b) and fabricated through plasma chemical vapor deposition (PCVD)and rod-in-tube (RIT) method. Using PDM-DFTS-OFDM-32QAM modulation, wavelength division multiplexing, mode multiplexing, and coherent detection, we successfully demonstrated 200 Tb/s (375 × 3 × 178.125 Gb/s) signal over 1 km FMF using C and L bands with 25 GHz channel spacing. After 1 km FMF transmission, all the tested bit error rates (BERs) are below 20% forward error correction (FEC) threshold (2.0 × 10⁻²). Within each sub-channel, we achieved a spectral efficiency of 21.375 bits/Hz in the C and L bands.