4x1 WDM kullanan görünür ışık iletişim sistemi

A wireless technology that transmits the message by using a carrier's visible light is Visible Light Communications (VLC). Three fundamental colors, red, green and blue, show the white light. These colors are multi-colored and operate at different wavelengths with their respective colors. Different information signals control LEDs by the Wavelength Multiplexing Division (WDM) and are converted into a single optical multiplexed data stream. This optical data stream is split into distinct colors or wavelengths and is then decrypted with the image sensors with a color filter in the receiving hand. The higher data rate may be achieved from a parallel point of view thanks to WDM information. In this document, the OptiSystem software shows a 4x1 WDM based VLC scheme. The information rate achievable is up to 100 Mbps, which has a 3x10-8 Bit Error Rate (BER).