Performance Analysis of Free Space Optics Link Under the Effect of Rain Attenuation

2021 8th International Conference on Computer and Communication Engineering (ICCCE) Pub Date : 2021-06-22 DOI:10.1109/ICCCE50029.2021.9467207

Siti Hajar Ab Aziz, N. A. M. Nor, S. A. Zabidi

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引用次数: 5

Abstract

Free space optical (FSO) networking has emerged as a promising technology for bridging the last mile gap in current high-rate fibre networks as well as for high-rate next-generation broadband wireless communication networks. This paper theoretically investigates the performance of the Free Space Optic system under rainy weather conditions using Optisystem software. Quality factor and eye-diagram analysis are used to analyse the FSO performance for several rain intensity and precipitation, following the Carbonneau model for rain attenuation. The results show that the link is completely lost when the distances are at 1.5 km, 1.2 km, and 0.8 km for light rain, moderate rain, and heavy rain, respectively. An optical amplifier is then introduced to improve the system performances and increase the signal intensity, which helps to mitigate the atmospheric effects easily. As a result, data transmission is sustained without interruptions, and overall connectivity is enhanced. Results show that the transmission range improves up to several meters, specifically under moderate rain weather condition when using the optical amplifier gain is applied.

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雨衰减作用下自由空间光学链路性能分析

自由空间光(FSO)网络已经成为一种有前途的技术，可以弥合当前高速光纤网络和高速下一代宽带无线通信网络的最后一英里差距。本文利用Optisystem软件对自由空间光学系统在阴雨天气条件下的性能进行了理论研究。采用质量因子和眼图分析方法，根据Carbonneau降雨衰减模型，分析了不同降雨强度和降水条件下FSO的性能。结果表明，小雨、中雨和大雨分别在1.5 km、1.2 km和0.8 km时，这种联系完全消失。然后引入光放大器来改善系统性能和增加信号强度，这有助于减轻大气效应。因此，数据传输不会中断，整体连通性得到增强。结果表明，在中雨天气条件下，采用光放大器增益后，传输距离可提高数米。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2021 8th International Conference on Computer and Communication Engineering (ICCCE)

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