Ultra-High Capacity Optical Satellite Communication System Using PDM-256-QAM and Optical Angular Momentum Beams. - Sachdeva, Shippu; Kaur, Simarpreet; Arora, Romisha; Sindhwani, Manoj; Arora, Krishan; Cho, Woong; Joshi, Gyanendra Prasad; Doo, Ill Chul (Sensors (14248220), 2023)