Performance improvement of free space optical link by varying transmitter and receiver aperture diameter

Free space optical communication system (FSO) is a potential solution for increasing bandwidth demands. The FSO has a capability to provide high speed data communication, economic and quick deployable. Although FSO has many advantages, but at the same time FSO faces a major challenge from scintillation introduced by atmospheric turbulence. In this paper, the simulation performance investigation FSO Link using different combinations of transmitter and receiver aperture has been investigated. The performances are analyzed in terms of bit error rate (BER), Quality factor (Q) and eye diagrams. The maximum length of the FSO link achieved is 10 Km.