Figure 4
Effects of varying the frequency on normalized power distribution on different OAM modes. (a) 200-m link with D/r0 = 0.224, w0 = 0.1 m at the transmitter side, (b) 200-m link with \({C}_{n}^{2}\) = 1 × 10–11 m-2/3, w0 = 0.1 m. OAM + 4 is transmitted for all the cases. Legends and scales in y-axis in (a,b) are the same.
