Figure 8. Received optical power Prec as a function of the receiver aperture diameter Drx for a transmitted power Ptx = 20 dBm. Larger receiver apertures significantly improve the collected power. The Sech profile achieves the highest received power, followed by the Gaussian profile

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