Optically powered heterodyne modulated sub-THz over fiber using DP-16QAM at 100G in the scenario of ITU-T standard G.9804 for 6G fronthaul

This article presents hybridization of data signal at the sub-terahertz (sub-THz) band and power signal together upon single mode fiber with concern of 6G fronthaul. Emerging technologies power signal and data at THz-spectrum over same fiber, makes it innovative under 6G domains. It offers novel fronthaul structure to serve applications like holographic-communication, quantum-computing, wide-bandwidth, reliability, sensing & imaging, etc. Digital technique dual-polarization 16-quadrature amplitude modulation(DP-16QAM) is used at 100Gbps passive optical network(100G-PON) that sends the data signal by a sub-THz spectrum that gives speed to the signal whereas power signal is examined at 100mW-1000mW that increase the energy efficiency at wavelength 850 nm. The wavelength plan 1340–1344 nm is used for transmission under the international telecommunication union-telecommunications(ITU-T) standard series-G.9804. Dense wavelength division multiplexing(DWDM) architecture is used to send the data signal at 160 GHz that presents sub-THz over fiber. To generate sub-THz, heterodyne modulation technique is used. The outcomes are examined and validated with help of error vector magnitude(EVM) near 4 %, error-rate around 10⁻⁸ to 10⁻¹⁴, dots on the constellation figure for X and Y-polarization, as well as noise that shows together that proposed architecture can be compatible towards 6G fronthaul networks. PoF decreases complexities and installation cost of 6G fronthaul networks, and energy consumption and reduces maintenance expenses of PON extenders. It enhances signal-recovery and boosts signal in remote area which makes it fascinating. Apart from thigh-speed data reception, a sufficient power level is received at receiver side which can power antenna units and IoT devices.