THz-over-fiber transmission with a net rate of 5.12 Tbps in an 80 channel WDM system

Abstract

An experimental demonstration of the ultra-large-capacity terahertz (THz)-wave signal transmission over a 20-km wired and 54-m wireless distance in an 80-channel wavelength division multiplexing (WDM) system is successfully realized for the first time, to the best of our knowledge. Based on optical asymmetric single-sideband (ASSB) modulation and advanced digital signal processing (DSP) algorithms, we achieve a record line rate of 6.4 Tbit/s (net rate of 5.12 Tbit/s) in a THz-over-fiber communication system. This experimental demonstration can provide an effective solution for ultra-large-capacity THz-over-fiber communication in future 6G networks.

Two-way free-space optics-based interface between fibre and 5G communication employing polarisation-orthogonal modulation

“…The amplified signal is then transmitted wirelessly by a set of horn antennas (HAs) operating in Ka-band at 26.5–40 GHz. The MMW beam is radiated to free space through a set of polytetrafluoroethylene (PTFE) lenses operating at MMW frequencies 32 , 33 . After wireless transmission at 20 m distance, the 10-Gbps/38-GHz signal is down-converted to the 10-Gbps/14-GHz intermediate frequency signal through a mixer with a 24-GHz local oscillator signal.…”