Mode Division Multiplexing of LG and HG modes in Ro-FSO

Abstract

Radio-over-free-space-optics (Ro-FSO) is a strong contender for providing a ubiquitous platform for seamless integration of high capacity radio and optical networks without expensive optical fiber cabling. This work presents mode division multiplexing of LG and HG modes in a 40 GHz Ro-FSO transmission system to realize 4 x 20Gbps over a free space optical link under clear weather conditions. The signal-to-noise-ratio, received power and constellations will be analyzed.