1 research outputs found
A Contemporary Survey on Free Space Optical Communication: Potential, Technical Challenges, Recent Advances and Research Direction
Optical wireless communication (OWC) covering an ultra-wide range of
unlicensed spectrum has emerged as an extent efficient solution to mitigate
conventional RF spectrum scarcity ranging from communication distances from nm
to several kilometers. Free space optical (FSO) systems operating near IR (NIR)
band in OWC links has received substantial attention for enormous data
transmission between fixed transceivers covering few kilometers path distance
due to high optical bandwidth and higher bit rate as well. Despite the
potential benefits of FSO technology, its widespread link reliability suffers
especially in the long-range deployment due to atmospheric turbulence, cloud
induced fading, some other environmental factors such as fog, aerosol,
temperature variations, storms, heavy rain, cloud, pointing error, and
scintillation. FSO has the potential to offloading massive traffic demands from
RF networks, consequently the combined application of FSO/RF and radio over FSO
(RoFSO) systems is regarded as an excellent solution to support 5G and beyond
for improving the limitations of an individual system. This survey presents the
overview of several key technologies and implications of state-of-the-art
criteria in terms of spectrum reuse, classification, architecture and
applications are described for understanding FSO. This paper provides
principle, significance, demonstration, and recent technological development of
FSO technology among different appealing optical wireless technologies. The
opportunities in the near future, the potential challenges that need to be
addressed to realize the successful deployment of FSO schemes are outlined.Comment: 59 pages, 14 figure