Construct a polarizing beam splitter by an anisotropic metamaterial slab

Abstract

The propagation of electromagnetic waves in the anisotropic medium with a single-sheeted hyperboloid dispersion relation is investigated. It is found that in such an anisotropic medium Eand H-polarized waves have the same dispersion relation, while E-and H-polarized waves exhibit opposite amphoteric refraction characteristics. E-(or H-) polarized waves are positively refracted whereas H-(or E-) polarized waves are negatively refracted at the interface associated with the anisotropic medium. By suitably using the properties of anomalous refraction in the anisotropic medium it is possible to realize a very simple and very efficient beam splitter to route the light. It is shown that the splitting angle and the splitting distance between E-and H-polarized beam is the function of anisotropic parameters, incident angle and slab thickness.

FDTD Study on Wave Propagation in Layered Structures With Biaxial Anisotropic Metamaterials

“…The backward surface wave can be excited even if the constants in the relative permittivity and permeability tensors of anisotropic metamaterial are not all negative. As theoretical investigation in reference [15], a compact and very efficient beam splitter based on large birefringence can be only made of AMM slab to route wave, if one polarized wave is positively refracted (v gx > 0) whereas the other is negatively refracted (v gx < 0). The AMM slab can be realized with ring and rod.…”

“…Some propagation characteristics of electromagnetic (EM) waves associated with AMM have been analytically discussed. Such as negative GoosHänchen shift [11,12], anomalous reflection, total reflection [13], and total transmission [14] at the interfaces between isotropic regular media and AMM et al Anisotropic metamaterials have potential applications in polarizing beam splitter [15], a band separating device [16], solidstate spectroscopy, and Omnidirectional linear polarizer et al…”

Negative Refraction in an Anisotropic Metamaterial With a Rotation Angle Between the Principal Axis and the Planar Interface

“…In addition, the negative refraction has also been demonstrated experimentally at the interface associated with a wedge composed of anisotropic metamaterial cut along nonprincipal axes [17], indicating that certain classes of anisotropic media have identical refractive properties as isotropic negative index materials [18]. Such materials can be readily constructed using different resonant inclusions such as SRRs and rods to demonstrate negative refraction, and they have potential applications in imaging, polarizing beam splitter, and wave guiding [19][20][21].…”

“…Thus, the electromagnetic characteristics of anisotropic metamaterial, in which the components of the permittivity and permeability tensors are not all of the same sign, have been discussed theoretically and experimentally in many literatures [11][12][13][14][15][16][17][18][19][20][21][22][23]. Lindell et al have demonstrated that the occurrence of negative refraction at the interface associated with uniaxially anisotropic media requires only one tensor component with a negative value [14].…”

A Wave Splitter with Simple Structure Based on Biaxial Anisotropic Medium

“…It is well known that the propagations and characteristics of metamaterial are significantly different from those of isotropic materials [3][4][5][6][7][8][9][10][11][12][13][14][15]. Metamaterial has many unusual properties and may lead to important applications, such as absorber [16], wave splitter [17], and subwavelength rectangular cavity [18].…”