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Shariati B, khatami S, Mashal A, Dabbagh Kashani F. Reliability Analysis of Optical Communication Links Based on Propagation of Divergent Astigmatic Circular Partially Coherent Flat-Topped Laser beam . ICOP & ICPET _ INPC _ ICOFS 2015; 21 :213-216
URL: http://opsi.ir/article-1-556-en.html
URL: http://opsi.ir/article-1-556-en.html
1- Iran University of Science and Technology
Abstract: (4630 Views)
In this paper, the propagation of a divergent circular Partially Coherent Flat-Topped (PCFT) beam with astigmatism aberration in a turbulent atmosphere is investigated. Based on the extended Huygens-Fresnel integral method, analytical formula for the average intensity is derived. Power is calculated numerically and the effects of some source and environmental factors- such as wavelength, degree of flatness, divergence angle and visibility on communication parameters, Signal to Noise Ratio (SNR), Bit-Error Rate (BER) and Power In Bucket (PIB), are studied. The calculated results are shown graphically.
Keywords: atmospheric turbulence, propagation of a circular PCFT beam, astigmatism aberration, extended Huygens-Fresnel method, communication parameters
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