Effects of loss factors on zero permeability and zero permittivity gaps in 1D photonic crystal containing DNG materials

Abstract

The effects of electric and magnetic loss factors on zero- and zero- gaps in a one-dimensional lossy photonic crystal composed of double-negative and double-positive materials are theoretically investigated by employing the characteristic matrix method. This study contradicts the previous reports as it indicates that by applying the inevitable factors of electric and magnetic losses to the double-negative material, the zero- and zero- gaps appear simultaneously in the transmission spectrum, being independent of the incidence angle and polarizations. Moreover, the results show that these gaps appear not only for an oblique incidence but also in the case of normal incidence, and their appearance at the normal incidence is directly related to the magnetic and electric loss factors. Besides, the results indicate that as the loss factors and angle of incidence increase, the width of both gaps also increases.

Loss factor dependence of defect mode in a 1D defective lossy photonic crystal containing DNG materials

“…As shown and mentioned in our previous reports [13,26,46,47,49], for 3.13 f  GHz, the real parts of the permittivity and permeability,   and   , are simultaneously negative (DNG material). For 3.…”

“…Accordingly, the existence of loss or dissipation affects wave attributes. Thus, the impacts of dissipation on the wave properties have been investigated in stacking alternating layers consisting of DNG materials [23][24][25][26]. Since DNG material is an artificial combination created by metal thin-wire (TW) and metal split-ring resonator (SRR) constructions, it is essential to consider the inherent metal losses in a DNG material.…”

Analysis of cutoff frequency in a one-dimensional superconductor-metamaterial photonic crystal

“…Moreover, the inclusion of metamaterials in PCs may lead to the appearance of a new band gap with unusual properties over the ordinary PBG [13]. This new gap appears when the average refractive index of the designed PCs equals to zero [13,14]. Therefore, this gap is known as zero-n gap.…”

Absorption in One-Dimensional Lossy Photonic Crystal

“…More details concerning the various aspect of the real parts of the permittivity and permeability, ! ' and µ ' , versus frequency have discussed in our previous reports [24,25]. The complex permittivity and the permeability will be described within the framework of the Drude model for type-II DNG layer [50] as,…”

“…With the possibility of producing metamaterials, PCs containing metamaterials known as metamaterial photonic crystals (MetaPCs) have been developed. The conventional PCs and MetaPCs because of their unique electromagnetic properties and scientific and engineering applications have attracted extensive attention by many researchers in recent years [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30].…”