A Survey of Free Space Optics (FSO) Communication Systems, Links, and Networks
A Survey of Free Space Optics (FSO) Communication Systems, Links, and Networks
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DOI：
10.1109/access.2020.3048049
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发表时间：
2021-01-01
期刊：
影响因子：
3.9
通讯作者：
Almohamad, Tarik A.
中科院分区：
文献类型：
--
作者：
Al-Gailani, Samir Ahmed;Salleh, Mohd Fadzli Mohd;Almohamad, Tarik A.
下一代（NG）光技术将展现出某些独特的功能，即超高数据速率、宽带多业务、可扩展带宽以及面向多种终端用户的灵活通信。在众多的光通信技术中，自由空间光通信（FSO）技术以其低成本、易部署、高带宽、高安全性等优势，成为未来实现自由空间数据传输的关键技术。本文综述了无线光通信技术的最新进展，并分析了影响无线光通信技术普及应用的因素。作为综述的一部分，我们提供了所有类型的FSO系统的基本概念，包括由单波束和多波束组成的系统架构。本文还进一步讨论了雨和霾对FSO信号传播的影响。最后的目标，我们涵盖的是一个FSO网络的可扩展性，通过实施混合多光束FSO系统与波分复用（WDM）技术。
The next generation (NG) optical technologies will unveil certain unique features, namely ultra-high data rate, broadband multiple services, scalable bandwidth, and flexible communications for manifold end-users. Among the optical technologies, free space optical (FSO) technology is a key element to achieve free space data transmission according to the requirements of the future technologies, which is due to its cost effective, easy deployment, high bandwidth enabler, and high secured. In this article, we give the overview of the recent progress on FSO technology and the factors that will lead the technology towards ubiquitous application. As part of the review, we provided fundamental concepts across all types of FSO system, including system architecture comprising of single beam and multiple beams. The review is further expanded into the investigation of rain and haze effects toward FSO signal propagation. The final objective that we cover is the scalability of an FSO network via the implementations of hybrid multi-beam FSO system with wavelength division multiplexing (WDM) technology.