Tunable defect mode in a semiconductor-dielectric photonic crystal containing extrinsic semiconductor defect

Photonic Crystal Enhanced by Metamaterial for Measuring Electric Permittivity in GHz Range

“…By modifying the refractive index of the defect, the properties of the defect peak can be altered [16,17]; such tunability opens the door for many different sensors, extending from chemical compounds to different biological cells and tissues [18][19][20][21]. Many materials have been examined to enhance the PCs' photonic bandgap properties and sensing abilities, ranging from metals [22], dielectrics [23,24], semiconductors [17], superconductors [25], and plasma. Recently, metamaterials have been identified as a possible candidate to enhance the PCs' properties [26].…”

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

“…As regards PCs and MetaPCs properties, several authors have reported the properties of the defect modes in different 1D conventional PC and 1D MetaPC defective structures by introducing positive or negative indices defects [33][34][35][36][37][38][39][40][41][42][43][44][45][46][47], and several papers have investigated the dependency of defect modes on the incidence angle, polarization, lattice constant, geometric structure, and thickness of the layers in 1D PC and 1D lossless MetaPC. In this paper, the characteristic matrix method is used to survey the effects of the electric loss factor e  and the magnetic loss factor m  on the defect modes in the transmission spectra of 1D lossy MetaPC composed of DNG and DPS materials with a defect layer at the center of the structure.…”

Omnidirectional narrow bandpass filters based on one-dimensional superconductor–dielectric photonic crystal heterostructors

“…Therefore, employing of tunable elements in the PhCs gives us the possibility to tune the optical properties with considerable flexibility, leading to novel applications. In general, permittivity's of tunable materials such as ferroelectrics [11,12], liquid crystals [13,14], ferromagnetic [15,16], semiconductors [17][18][19] and superconductors [8,[20][21][22][23][24][25] in the PhCs can be changed by some external agents like as electric fields, magnetic fields or temperature. Recently, superconducting PhCs have attracted much attention and have two important advances compared with metallic and dielectric PhCs [20][21][22][23][24][25].…”