Optical vortex detector as a basis for a data transfer system: Operational principle, model, and simulation of the influence of turbulence and noise

► Light intensity measuring as determining of optical vortex topological charge. ► Operational principle enables vortex detector speed of response more than 1 GHz. ► “Vortex” communication is realizable under turbulence and photodetector noise. ► Differential coding algorithm with adaptive threshold minimizes error probability. ► “Vortex” communication channel is characterized by protection high degree.