Abstract
This article describes wireless optical data networks using visible spectra of optical radiation with a focus on interior areas with direct line of sight LOS (line-of-sight). This type of network represents progressively evolving area of information technologies. Development of lightning technologies based on white power LED was the impulse for wireless optical data networks based on visible spectra of optical radiation (VLC) development. Its basic advantage is the flexibility of users. Users don’t have to stay on one place during the data sharing anymore. Wireless optical data networks represent an alternative solution for metallic and fiber networks [1], [2]. This paper deals with the software simulation of homogeneous distribution of optical irradiation in dark room model, carrying out in LightTools software. First, in previous simulations, the optical source composed from 9 SMD LED’s type LW G6SP-EAFA-JKQL-1 was designed. In various simulations, various numbers and distributions of LED’s were used. These were placed at the ceiling of the dark room. At last, the results of optical irradiation homogeneity are compared.
Highlights
Since the wavelength range is different from the infrared communication, the design parameters of the LightTools software provides an efficient modeling sysPLC system need to be changed according to the contem with full optical accuracy and precision
As a basis for the simulation, it was necessary to establish the model of a dark room first; this is shown in the Fig. 3
The wireless optical networks for indoor spaces operating in visible spectral range (VLC) are coming to the fore
Summary
Optical wireless communication (OWC) is a basic term for wireless communication with optical technology. The size of the zone without obstacles depends on operating frequency and the distance from the trans- The main parts of VLC transmitter are visible LEDs. mitter to the receiver. The difference between VLC transspace and does not transmit a signal within one direct mitter and conventional communication transmitter is route, so it is known as diffusion system. These that VLC transmitter has to be operating as transmitsystems operate regardless to obstacles or persons in ter and lightening simultaneously. For LEDs data modulation, is non direct LOS link with the transmitter mounted it must be taken into account the modulation bandon the ceiling and the receiver on the floor [8]. Requirements for interior lightening of office spaces are according to the ISO standards set to 200–1000 lx
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