Hi Alistu,
I do not want to use FSO here as it has some major drawbacks such as its performance is weather dependent i.e. in case of rain or some other parameter this system quality degrades. and one more issue is that there is a need for high accuracy in the alignment i.e. direction is of more concern so for these disadvantages i do not want to use it.
furthermore the design file in the issue you have referred these results are for only 0.5m which is very less and and we need it in terms of km range in free space optics.
Thanks for the reply.
Regards