Graded index photonic crystals: a review
Q Zhu, L **, Y Fu - Annalen der Physik, 2015 - Wiley Online Library
A new type of photonic crystal (PC) named graded index (GRIN) PC was proposed by E.
Centeno in 2005. It is obtained by appropriately modifying the parameters of a regular PC …
Centeno in 2005. It is obtained by appropriately modifying the parameters of a regular PC …
Acoustic far-field focusing effect for two-dimensional graded negative refractive-index sonic crystals
Focusing effect is experimentally observed for acoustic plane wave normally incident onto a
two-dimensional sonic crystal with gradient negative refractive index. The gradual refractive …
two-dimensional sonic crystal with gradient negative refractive index. The gradual refractive …
Photocontrollable photonic crystals based on porous silicon filled with photochromic liquid crystalline mixture
Novel photocontrollable photonic crystals based on porous silicon prepared by
electrochemical etching are elaborated and their great potential for creation of …
electrochemical etching are elaborated and their great potential for creation of …
Hexagonal higher-symmetric dielectric periodic structures for planar graded-index lenses
We investigate dispersion properties of a hexagonal dielectric periodic structure that can be
used to engineer dielectric graded-index lenses. The connection between the geometry of …
used to engineer dielectric graded-index lenses. The connection between the geometry of …
Photonic crystal waveguide intersection design based on Maxwell's fish-eye lens
The number of waveguides crossing an intersection increases with the development of
complex photonic integrated circuits. Numerical simulations are presented to demonstrate …
complex photonic integrated circuits. Numerical simulations are presented to demonstrate …
Phononic crystal lens with an asymmetric scatterer
A novel 2D gradient index phononic crystal (GRIN PC) lens was designed by rotating
scatterers that theoretically differs from the traditional GRIN PC lens by altering fill fraction …
scatterers that theoretically differs from the traditional GRIN PC lens by altering fill fraction …
Spatially variant periodic structures in electromagnetics
Spatial transforms are a popular technique for designing periodic structures that are
macroscopically inhomogeneous. The structures are often required to be anisotropic …
macroscopically inhomogeneous. The structures are often required to be anisotropic …
Self-focusing media using graded photonic crystals: Focusing, Fourier transforming and imaging, directive emission, and directional cloaking
Using numerical simulations, we investigate the realization of self-focusing media using two-
dimensional graded photonic crystals and their applications for imaging and non-imaging …
dimensional graded photonic crystals and their applications for imaging and non-imaging …
Differential evolution algorithm based photonic structure design: numerical and experimental verification of subwavelength λ/5 focusing of light
Photonic structure designs based on optimization algorithms provide superior properties
compared to those using intuition-based approaches. In the present study, we numerically …
compared to those using intuition-based approaches. In the present study, we numerically …
Cylindrical-lens-embedded photonic crystal based on self-collimation
Photonic crystals can be engineered so that the flow of optical power and the phase of the
field are independently controlled. The concept is demonstrated by creating a self …
field are independently controlled. The concept is demonstrated by creating a self …