Fog Mitigation Using SCM and Lens in FSO Communications

A free space optical (FSO)communications link performance is highly affected by the atmospheric conditions. This paper compares the effectiveness of employing a spherical concave mirror (SCM)and a convex lens at the receiver to compensate for the effect of fog in FSO communication links. The results show that, for the fog induced signal attenuation lower than 9.17dB there is a marginal improvement in the FSO link performance in terms of the Q-factor by a maximum of 8% when using an SCM at the receiver compared with a regular lens.