Analysis of beam divergence on free space optical link using polarization shift keying technique
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Date
2019
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SPIE spie@spie.org
Abstract
Beam diverging is an indispensable phenomenon on the quality and bit error rate (BER) performance of the free space optical (FSO) communication system. The role of an efficacious modulation technique that mitigates the combined effect of beam diverging and atmospheric attenuation is highly relevant. The weak depolarizing property of the atmosphere advances the use of polarization shift keying (PolSK) modulation. We are subjected to investigate the quality and feasibility of the communication link, considering the impact of beam divergence on the PolSK modulation under various weather conditions. It is shown that PolSK subdues the effects of increase in beam divergence, attenuation factor, and further extends the communication range. A comparison with on off keying and PolSK-based FSO links considering the divergence angle is discussed. Moreover, BER and quality factor graphs are plotted against link distance and beam divergence using PolSK, which improves the performance analysis. © 2019 Society of Photo-Optical Instrumentation Engineers (SPIE).
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Keywords
Bit error rate, Meteorology, Modulation, Optical communication, Optical links, Polarization, Atmospheric attenuation, Beam divergence, Bit error rate (BER) performance, Free space optical communication systems, Free space optics, Free-space optical link, Modulation techniques, Polarization shift keying, Quality control
Citation
Optical Engineering, 2019, 58, 4, pp. -