An Experimental Demonstration of over 100 Gbit/s OAM Multiplexing Transmission at a Distance of 100 m on 40 GHz Band

Abstract

This paper presents an experimental demonstration of orbital angular momentum (OAM) and polarization multiplexing in a filed environment. We put a milestone of over 100 Gbit/s wireless transmission at a distance of 100 m, and design OAM antennas based on a radio link design on 40 GHz band. Our OAM antennas have two uniform circular arrays with the same diameter using different linear polarizations, and the Butler matrices that are analog devices for generating and separating OAM modes. Then, we successfully achieved over 100 Gbit/s OAM multiplexing transmission at a distance of 100 m with 15 data streams using seven OAM modes (OAM mode 0, ±1, ±2, ±3) and dual linear polarizations on a 40 GHz frequency band with the bandwidth of 1.5 GHz.