Plasmonic Nanoantennas for 6G Intra/Inter-Chip Optical-Wireless Communications

This paper presents an efficient technological solution for ultralong intra/inter-chip optical-wireless nanolink based on the joint use of two different nanoantennas, namely horn and plantenna, aiming 6G applications at 474 THz. Numerical simulations demonstrate the applicability of the proposed approach, in which high-performance nanoantennas, acting as optical emitters and receivers, had been properly designed for providing reduced optical propagation losses, low reflection coefficient level, high directivity and high gain. Four different scenarios using horns and plantennas have been evaluated in order to obtain the best configuration for increasing the system reach. Importantly, the plantenna structure acting as receiver significantly enhanced the received power level, through the excitation of localized surface plasmon resonances, giving rise to ultralong intra/inter-chip optical wireless nanolink of 32 A, and 40 dB improvement in the link budget.