Visible Light Communication in Traffic Links Using an a-SiC:H Multilayer Photodetector

This paper presents results on the use of the viability of the use of a multilayered a-SiC:H device for the detection of light signals in a traffic link visible light communication system. Different optical conditions were used to test the device performance using the specific wavelengths of traffic lights. Amplification of the output signal was carried out using an adequate biasing steady state illumination from the front and back sides of the device. A systematic study was accomplished by changing the intensity of this biasing optical light Performance of the device under adverse optical conditions was also analyzed through the superposition of a continuous light spectrum over the wavelengths of interest.