120 Gbit/s aggregated channel transmission in the 600 GHz band using topological waveguide

In this paper, we demonstrate a THz 3x40 Gbit/s data transmission within the 600 GHz band. Bit-error-rate performance is compliant with standard error-correction techniques limits, setting building blocks for THz communications in the 600 GHz region. The transmission is realized through a silicon on insulator platform with a Valley photonic crystal design at a bearded interface. Furthermore, the realized sample shows very sharp passband filter features, paving the way for new THz signal processing functionalities.