Here the data related to our recent work that uses metasurfaces designed on metamaterials to excite Fano resonances and Rabi Split analogue modes for sensing. In this repository the following data are available: The Reflectance, Transmittance and Absorbance (1-T-R) evaluated over all the diffraction angles (from 0° to 85°) for the proposed structure (ring + cross) and the other tested structures. The sensing test performed for the reported structures using different surrounding medium. the Matlab code to reproduce numerical simulations using Reticolo (RCWA) as the main framework to do the computation. See version 2 for others available data that maybe are not reported here.