title: Power losses in diffuse ultraviolet optical communications channels.
abstract: One of the most critical parameters in free-space optical communications systems operating in a non-line-of-sight regime are the optical losses. In this Letter, we numerically calculate these losses taking into account the scattering effects using the Monte Carlo simulation technique. The obtained results are compared with experimentally obtained data at 265 nm (solar-blind UV regime). A large set of measurements at distances up to 20 m, for different elevation angles of the transmitter (UV-LEDs) and receiver (photomultiplier tube) and for different atmospheric conditions has been taken for the characterization of the optical communications channel in terms of its loss properties.
authors.forename: Nikos
authors.initials: N
authors.lastname: Raptis
authors.forename: Evangelos
authors.initials: E
authors.lastname: Pikasis
authors.forename: Dimitris
authors.initials: D
authors.lastname: Syvridis