Free‐space optics (FSO) is a perfect line of sight communication which is gaining a lot of popularity in the current research as it offers many advantages such as license free communication, high bandwidth, high speed, low bit error rate, and so on. Like the other communication technologies, FSO also suffers from adverse effects due to the climatic changes in the atmosphere. Some of the prominent effects that degrade the strength of the signal in free space are the fog, snow, haze, and rain. In this paper, the effects of fog and haze on the FSO link were investigated with the support of both simulated and experimental results. An experimental setup consisting of a single‐channel FSO system enclosed in a glass cabinet is used for generating the experimental results, and the simulation is carried out in OptiSystem using the Kim, Kruse, and Alnaboulsi prediction models. Results demonstrate that the simulated and experimental results follow the same pattern that as the intensity fog or the intensity of haze increases the received voltage levels decline.

中文翻译：

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雾和霾对405 nm自由空间光链路影响的实验研究

自由空间光学（FSO）是一种理想的视线通信，由于它具有许多优点，例如免许可通信，高带宽，高速，低误码率等，因此在当前的研究中受到了广泛欢迎。 。与其他通信技术一样，由于大气的气候变化，FSO也遭受不利影响。降低自由空间中信号强度的一些突出影响是雾，雪，阴霾和雨水。本文在模拟和实验结果的支持下，研究了雾霾对FSO链路的影响。使用由封闭在玻璃柜中的单通道FSO系统组成的实验装置来生成实验结果，并使用Kim，Kruse，和Alnaboulsi预测模型。结果表明，模拟和实验结果遵循相同的模式，即随着强度雾或雾度的增加，接收到的电压水平下降。