Abstract
Conference Title: 2018 Tenth International Conference on Ubiquitous and Future Networks (ICUFN) Conference Start Date: 2018, July 3 Conference End Date: 2018, July 6 Conference Location: Prague, Czech Republic This paper address the issues of optimizing unmanned aerial vehicle (UAV) using free-space optical communication (FSOC). In particular, we examine how the beam divergence and the atmospheric attenuation of FSOC channel affect the flight of energy efficient UAVs. Especially based on geometric loss and also the effect of rain, snow, and fog on FSOC, we showed the energy efficient trajectory of UAV.