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This article discusses the performance of the free space optics (FSO) systems for short-range applications with the input signal power optimization. The BER eye diagram analyzer used to compute the optimum bit error rate and also compute the maximum  Q  factor for the previous and proposed models. The previous model has outlined the maximum  Q  factor of 206.45, where the proposed model  Q  factor value is 569.867 under the same operating parameters such as the wavelength of the transmitter of 1550 nm, the power of the transmitter of 10 mW, and the range of FSO is 800 m and signal attenuation 0.4 dB/km. The proposed study has outlined better performance than the previous study by about 21.76% enhancement percentage ratio.

Free space and wired optics communication systems performance improvement for short-range applications with the signal power optimization