Hello Arif,
OptiSystem doesn’t have any component that converts solar radiation into current as in PV panels. However, you may assume an array of laser diodes that have certain power radiating in the visible and invisible spectrum (representing solar radiation) transmitted over FSO channel and detected using pin diodes. You need to calibrate the power of each laser based on the solar conversion of the PV panel.
I am not sure what is the application. However, if you need to discuss further, please contact me at ahmad.atieh@optiwave.com
Regards,
Ahmad