The article presents an experimental demonstration of a classical analogue of electromagnetically induced transparency (EIT) using all-dielectric silicon-based metasurfaces. Traditional plasmonic EIT metasurfaces suffer from high ohmic losses, limiting their Q-factors to values below 10. The authors achieve a Q-factor of 483 by minimizing radiative and non-radiative damping through coherent interaction among meta-atoms and reducing absorption loss. This results in a refractive index sensor with a figure-of-merit (FOM) of 103. The metasurface consists of a periodic lattice of rectangular bar and ring resonators, forming a Fano-resonant system. The narrow linewidth and strong near-field confinement enable precise optical field control, allowing for applications such as low-loss slow-light devices and highly sensitive optical sensors. The design and fabrication process, as well as the theoretical analysis, are detailed, and the performance of the metasurface is validated through numerical simulations and experimental measurements.The article presents an experimental demonstration of a classical analogue of electromagnetically induced transparency (EIT) using all-dielectric silicon-based metasurfaces. Traditional plasmonic EIT metasurfaces suffer from high ohmic losses, limiting their Q-factors to values below 10. The authors achieve a Q-factor of 483 by minimizing radiative and non-radiative damping through coherent interaction among meta-atoms and reducing absorption loss. This results in a refractive index sensor with a figure-of-merit (FOM) of 103. The metasurface consists of a periodic lattice of rectangular bar and ring resonators, forming a Fano-resonant system. The narrow linewidth and strong near-field confinement enable precise optical field control, allowing for applications such as low-loss slow-light devices and highly sensitive optical sensors. The design and fabrication process, as well as the theoretical analysis, are detailed, and the performance of the metasurface is validated through numerical simulations and experimental measurements.