Fig. 1. Experimental setup of transmission performance comparison of an OAM beam and the Gaussian beam system in atmospheric turbulence channel

Fig. 2. Diagram of atmospheric turbulence device

Fig. 3. Pattern of Gaussian beam and OAM beam passing through link without turbulence and link with turbulence

Fig. 4. Beam spreading ratio curves of OAM beam and Gaussian beam transmitted in atmospheric turbulence channel with different intensities

Fig. 5. Pointing error of OAM beam and Gaussian beam transmitted in atmospheric turbulence channel

Fig. 6. Dispersion circle diameter of the pointing error of OAM beam and Gaussian beam transmitted in atmospheric turbulence channel

Fig. 7. Jitter of received power of OAM beam and Gaussian beam transmitted in atmospheric turbulence channel

Fig. 8. Variance of jitter of received power of OAM beam and Gaussian beam transmitted in atmospheric turbulence channel

Fig. 9. Bit error ratio of OAM beam and Gaussian beam transmitting in atmospheric turbulence channel