We present the optical properties of a new type of photonic crystal (PC) named star-shaped
PC (STAR-PC) with anomalous equi-frequency contours. Intentionally introducing low …

We explore an efficient method to couple light from a dielectric medium into a two-
dimensional photonic-crystal waveguide (PCW). This is achieved by inserting a graded …

The unidirectional light transmission characteristics of a two-dimensional square-lattice
photonic crystal heterostructure consisting of rectangular metal rods and air holes immersed …

We have experimentally demonstrated a very low cross talk in photonic crystal waveguide
crossings of any kind. For cross talk reduction, we added a resonant cavity to the waveguide …

In this paper, the mathematical model of the modified step-theory is derived based on the
platform of two-dimensional photonic crystal structure that is infinitely long in third …

We demonstrate highly efficient and spectrally flat broadband coupling in photonic crystal
directional couplers. The result is obtained by use of a novel design with smaller holes …

An ultrasmall device size optical interleaver based on directional coupler waveguides in two-
dimensional photonic crystals (PCs) is proposed. The numerical results show that the …

A wavelength demultiplexer based on photonic crystal waveguide (PCW) couplers is
presented. A numerical approach based on the two-dimensional finite-difference time …

We describe a novel scheme based on evanescent guided-wave coupling for optically
interfacing between conventional fiber-optic and planar photonic crystal devices such as …

In this paper, a high efficiency 2-D T-shaped photonic crystal beam splitter is proposed. It
consists of a square lattice of GaAs rods (n= 3.4) embedded in air. The photonic crystal …