Design Analysis of A Compensation Technique In FSO Communication System to Mitigate Atmospheric Turbulence Effect

Analysis study of quality factor and bit error rate at wavelength change

“…Using three wavelengths (850 nm, 1310 nm, and 1550 nm). With each wavelength we use atmospheric attenuation (5,20,40,70) dB/km for a distance of 500 m.…”

“…When connecting the circuit by using a distance of 500 m and a wavelength of 1550 nm to find out the effect of the signal carried by the wavelength on the attenuation. We took the attenuation in the limits of (5,20,40,70) Comparison between the results of Shaina and Gupta [13] and the proposed work, of the extent to which wavelengths are affected by attenuation on the quality factor and error bit adjustment, for a distance of 500 m as shown in Table 4. Using the origin program, to draw the relationship between Q-factor and attenuation, was plotted using three windows at 850 nm, 1310 nm, and 1550 nm for a distance of 500 meters, in the Figure 15 shown here the lower the distance the higher the quality factor and vice versa was found to be the case.…”

“…The centroid of the transmitted beam is shifted by turbulent cells larger than the beam because of the beam's wandering distortion. By widening the beam radius, the beam spreading effect reduces the average intensity at the receiver [5]. Its extreme sensitivity to attenuation in adverse weather and turbulent air conditions makes it vulnerable to these significant free space optic advantages [6].…”