The principle of visible light communication technology is very simple, light represents 1, light off represents 0, and the combination of light and off carries information. However, because the frequency of visible light is much higher than that of wireless network communication signals, its propagation is very linear, and a slight obstruction will cause communication interruption. Taking into account the development trend of technology and product practicability, visible light communication is not likely to replace wireless networks and be widely used in homes, but this does not mean that this technology has no practical value. This technology has exciting application prospects in broadcast-style public communications. Using visible light communication technology, LED signal lights can tell the driver that there is congestion going straight ahead, and it is recommended to turn right to take another road.
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At present, there has been a huge breakthrough in the core technology of visible light communication.