POLARIZATION-INDEPENDENT NARROW BANDPASS FILTER AND NARROW TRANSMISSION-ANGLE FILTER BASED ON PHOTONIC HETEROSTRUCTURES COMPOSED OF SINGLE-NEGATIVE MATERIALS

摘要

We propose a photonic heterostructure consisting of two substructures composed of single-negative materials. Calculating the transmission spectra, we find that only the electromagnetic wave within a narrow bandpass and a narrow range of incident directions can be transmitted through this structure. Such structure can be used as a polarization-independent frequency filter integrated with a direction filter.