Low-temperature-sensitivity heterostructure photonic-crystal wavelength-selective filter based on ultralow-refractive-index metamaterials

摘要

We propose and numerically investigate the thermal-insensitive properties of a wavelength-selective filter based on heterostructure photonic crystals with ultralow-refractive-index metallic nanowires. The operational principle of the proposed device is based on the photon trapping by total external reflections between the ultralow refractive index metamaterial claddings and the guiding air cores. The low propagation losses, the ultracompact size as well as the temperature-insensitive operation are the main advantages of the proposed metamaterial technology, making the proposed de-multiplexer an excellent candidate for applications in nanophotonic-integrated systems operating in the visible frequency spectrum.