eng Science and Education Publishing International Journal of Physics 2333-4576 2025-08-29 13 4 80 90 10.12691/ijp-13-4-1 IJP20251341 article Amadou Soumahoro amad_soum@yahoo.fr 1 Douatia Kon¨¦ 1 2 Aladji Kamagat¨¦ 2 Department of mathematics, physics and chemistry, Photonics and Wave Propagation research team (PHONDE), P¨¦l¨¦foro Gon Coulibaly University, Korhogo, Ivory Coast Free space optics (FSO) is a promising technology, enabling high-speed data transmission despite challenging and unpredictable atmospheric conditions. However, its performance remains highly dependent on the propagation environment and the type of optical pulse used. This present work analyzes the reception performance of FSO systems employing soliton microcombs with wavelength division multiplexing (WDM) and polarization shift keying (PolSK) modulation across various pulse profiles. The study focuses on comparison of the impact of pulse shaping namely Gaussian, Sech, Super-Gaussian, and Lorentzian profiles on key reception parameters such as Bit Error Rate (BER), received power, Q-factor, and eye diagram opening, under realistic atmospheric conditions including turbulence () and pointing errors. Results reveal that the Sech-shaped microcombs consistently offer superior performance, with larger eye openings (± 2.5 A), higher received power (28.5 dBm), Q-factors exceeding 12.5, and BERs below 10?9 for a total generated bandwidth of ~12.5 THz, even under non-ideal alignment. The Gaussian profile follows closely, while Lorentzian and Super-Gaussian pulses exhibit significant performance degradation. The analysis also shows that optimizing receiver aperture diameter (40¨C60 cm) and beam divergence (0.25 mrad) enhances resilience to turbulence and alignment jitter. This study highlights the importance of pulse-profile design in soliton-based multi-wavelength FSO systems and provides actionable insights for optimizing waveform generation in spectrally efficient optical wireless links. https://pubs.sciepub.com/ijp/13/4/1/ijp-13-4-1.pdf Optical Free Space reception performance soliton microcombs pointing errors pulse profiles