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Free space optics (FSO) is gradually being seen as a potential technique for supporting high-speed communication. Nonetheless, FSO meets challenges caused by the air medium through which the laser beam travels. This research overcomes these obstacles by utilizing spatial diversity tactics. In particular, a two-way relay (TWR) is used to build a two-way communication link between two remote places. The TWR extends the range of FSO gearbox and mitigates the effects of fading, which vary with distance. Extensive research is conducted on the many applications of TWR-supported FSO communication, and a mathematical methodology for analyzing performance indicators at the physical layer is introduced. Furthermore, various channel impediments such as route loss, pointing mistakes, and atmospheric turbulence are addressed in detail. To account for changing amounts of atmospheric turbulence, the use of …