Fig. 1. Spatial coherent optical communication system model influenced by atmospheric turbulence

Fig. 2. Effect of laser linewidth on BER when turbulence intensities are not same

Fig. 3. Effect of laser linewidth on BER when transmission distances are not same

Fig. 4. Effect of turbulence scale on BER when linewidths are not same

Fig. 5. Effect of laser linewidth on BER when difference frequency signal bandwidths are not same