Ultraviolet Communications: Potential and Applications
As a new yet less explored spectrum within optical bands for wireless communications, ultraviolet is deemed an interesting light with attractive features. Ultraviolet bands encompass wavelengths ranging from 400nm to 4nm. Among these, wavelengths of 200nm – 280nm are often referred to as UV-C bands, which are solar blind, thanks to the ozone layer. The ultraviolet communications (UVC) utilizing these bands offer a unique propagation feature of angle independent scattering, creating diverse communication paths from source to destination. Indeed, the UVC delivers the signal beyond obstruction, enabling non-line-of-sight (NLOS) communications, thereby eliminating the pointing, acquisition, and tracking (PAT) requirement. From this scattering feature, a common volume is formed in the air between the transmitter and the receiver beams, through which photons are received. The UVC benefits from this scattering phenomenon, but pose many challenges in deploying the UVC system. As atmospheric turbulence exists over a transmission link, the UVC is especially sensitive to this impairment and thus its performance varies according to the severity of turbulence. In this talk, we will present the main features of UVC and channel impairments, and discuss some interesting applications of UV technology.
YEON HO CHUNG (email@example.com) is a Professor of the Department of Information and Communications Engineering, Pukyong National University , Busan, Republic of Korea . He obtained an MSc. from Imperial College London, United Kingdom, in 1992 and a Ph.D. from the University of Liverpool, United Kingdom, in 1996.
He was a visiting professor at Pennsylvania State University, University Park, U.S. and also at Chiba University, Japan. Over the past five years, he published more than 60 research papers in international journals in the field of wireless communications and optical wireless communications. He received the Top 2014 Paper Award from Transactions on Emerging Telecommunications Technologies, Wiley, and also received the Busan Science and Technology Award for outstanding research achievements in 2020. He is an associate Editor of IEEE Access and a senior member of IEEE . His research interests are visible light communications, camera based optical wireless communications and ultraviolet scattering communications.