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International Journal of Physics. 2025, 13(4), 80-90
DOI: 10.12691/ijp-13-4-1
Open AccessArticle

Evaluation of Pulse Shapes on the Reception Performance of an FSO-WDM-PolSK System

Amadou Soumahoro1, , Douatia Koné1, 2 and Aladji Kamagaté1

1Department of mathematics, physics and chemistry, Photonics and Wave Propagation research team (PHONDE), Péléforo Gon Coulibaly University, Korhogo, Ivory Coast

2Research and Technologies Innovation Département, Ecole Supérieure Africaine des Technologies de l’Information et de la Communication, Abidjan, Ivory Coast

Pub. Date: August 29, 2025
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Cite this paper:
Amadou Soumahoro, Douatia Koné and Aladji Kamagaté. Evaluation of Pulse Shapes on the Reception Performance of an FSO-WDM-PolSK System. International Journal of Physics. 2025; 13(4):80-90. doi: 10.12691/ijp-13-4-1

Abstract

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 (40–60 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.

Keywords:
Optical Free Space reception performance soliton microcombs pointing errors pulse profiles

Creative CommonsThis work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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