Empirical approach investigation Li-Fi pathloss propagation model and filter coloring effect

Li-Fi (Light Fidelity), is one of technology complement with radio communication. This technology aim was to provide a new way of communication using light instead of radio communication. In this paper we studied path loss propagation model for Li-Fi and also the effect of colorings filter. Our method is using one light sensor and do walk test with 1 meter interval. As a result the new model was better compare to the basic invers square law and light measurement model. For 90° angle the new model only had 0.01 lux (for 800 Lumens) and at about 0.76 lux (for 350 Lumens) at 8 meter. It also interesting that the filtering color has some effect, such as green and blue color filter has same result measurement hence it cannot be used for Li-Fi WDM application.