We investigate electromagnetic wave propagation in multilayered metal-dielectric hyperbolic
metamaterials (HMMs). We demonstrate that high-k propagating waves in HMMs are volume …

Abstract Leaky-Wave Antennas (LWAs) enable directive and scannable radiation patterns,
which are highly desirable attributes at terahertz, infrared and optical frequencies. However …

A low-cost compact planar leaky-wave antenna (LWA) is proposed offering directive
broadside radiation over a significantly wide bandwidth. The design is based on an annular …

We propose a design of a dielectric (silicon nitride) optical leaky wave antenna (OLWA) with
periodic semiconductor (silicon) corrugations, capable of producing narrow beam radiation …

Spatial filtering is demonstrated at beam-type excitations by utilizing finite thickness slabs of
two-dimensional dielectric photonic crystals (PCs) showing exotic Fabry–Perot resonances …

We investigate the emission of electromagnetic waves from biaxial subwavelength
metamaterials. For anisotropic structures that exhibit a vanishing dielectric response along …

A metalens for detection a polarization ellipticity of an incident beam and the wavelength is
considered in this work. The metalens is constructed of blocks of diffraction gratings with a …

In this paper we demonstrate the possibility of backward radiation from a negative
permittivity planar (slab) waveguide. Furthermore, we show that backward radiation can be …

We study numerically a group of asymmetric open cavities located at the exit of a photonic
crystal waveguide. High angular confinement and deflection of the photonic beam are …

This thesis presents novel devices and techniques that enable new methods for
enhancement, concentration, refraction, shaping, collimation, and directive beaming of …