Figure 4
From: Turbulence-Resistant FSO Communication Using a Few-Mode Pre-Amplified Receiver
Coupling efficiencies using ideal AO, DM AO, or the FM pre-amplified receiver, with different levels of turbulence for (a) d/r0 = 2; (b) d/r0 = 5; (c) d/r0 = 15. The intensity is assumed to be uniform across the beam.
