Figure 7. Average bit error rate (BER) versus receiver aperture diameter Drx for a transmitted power Ptx = 20 dBm and scintillation index ). Four beam profiles (Gaussian, Super-Gaussian, Sech, and Lorentzian) are com- pared. Increasing the receiver aperture diameter reduces the BER,with the Sech profile showing the most significant improvement

From

Evaluation of Pulse Shapes on the Reception Performance of an FSO-WDM-PolSK System

Amadou Soumahoro, Douatia Koné, Aladji Kamagaté

International Journal of Physics. 2025, 13(4), 80-90 doi:10.12691/ijp-13-4-1