LAUSR

We experimentally demonstrated the transmission of 300 GHz Delta-sigma Modulation (DSM) signals over Hollow-core fibers (HCF) and 2 m wireless links. By using dual-carrier modulation, we effectively improve the signal-to-noise ratio of the generated terahertz signal. At the same time, through HCF, we have successfully solved the problem of wavelength walk-off of optical terahertz (THz) signals caused by chromatic dispersion (CD) when transmitted in fiber links, and successfully demonstrated the transmission of a 24 Gbaud OOK-DSM signal over 2 km of HCF and 2 m of wireless links. The demonstration system supports mobile fronthaul (MFH) of 1024 QAM. At the same time, HCF is more suitable for delay-sensitive fronthaul links due to its low transmission delay characteristics. Therefore, the demonstrated system provides a promising scheme for MFH in areas where fiber is difficult to deploy.