High-quality factor Fabry-Pérot resonator based on a double dielectric cylinder array metamaterial

We propose a Fabry-Perot type optical cavity based on an array of double dielectric nano-cylinder arrays. Fabry-Perot cavity at double cylinder array are formed by two dielectric cylinder arrays. Double dielectric nano-cylinder arrays with a period of 660 nm shows high quality factor than 10^6. Also, the Fabry-Perot resonant wavelengths and quality factors can be tuned by controlling the gap between double dielectric cylinders. Specifically, the quality factor and Fabry-Perot resonant wavelengths, which are not much affected by the horizontal alignment of double cylinders. Our structure has simplicity and high efficiency. Which can be used in combination with laser and filter.