Experimental Demonstration of Free-Space sub-THz Communications Link Using Multiplexing of Beams Having Two Different LG Modal Indices

Abstract

We experimentally demonstrate a free-space sub-THz communication link using multiplexing of beams carrying two different LG modal indices. Multiplexed LG2,0 and LG1,1 beams each carrying a 1-Gbaud QPSK data channel at 300 GHz carrier frequency are transmitted over 40 cm link distance.