In this paper, we give an analytical demonstration of electromagnetic induced transparency (EIT) resonance by a simple photonic device consisting two grafted resonators (metamaterials type Epsilon Negative Gauchy (ENG)) lengths d2 and d3.Then, study theoretically the transmission spectrum dispersion relation periodic comb-like waveguides system built segments length d1 (of right-handed material).The electrical permittivity, ε, asymmetric with d3, depends on frequency incident waves (ENG...

We report a novel characteristic of the phenomenon Fano resonance obtained by interaction incident electromagnetic waves and waveguides system formed loop resonators.The Green Function Method (GFM) is employed to calculate transmittance incoming waves.Our proposed achieve selecting filtering device either total transmission or reflection with very high performance.The structure contains four segments same lengths, asymmetric resonators (N N ′ resonators) are moving in structure.Through...

Introduction: This work presents a theoretical and numerical approach to the design of highly sensitive refractive index sensor operating in visible spectrum. The proposed features simple configuration utilizing serial loop structures that can support defect modes within photonic bandgap. Methods: These arise from introduction geometric material imperfections at level structure. By employing continuous medium interface response theory, we calculate Green function for composite systems,...

We study the transmission spectrum and band structure of a one-dimensional photonic crystal, made alternating layers SiO2 TiO2 with GaAs defect layer. The relative permittivity depends on hydrostatic pressure temperature, while its thickness only pressure. objective this work is to apply an external temperature behavior mode. insertion layer inside perfect creates mode in gaps higher quality factor Q (Q=65858) important rate T (T=88%). results show that our sensitive variations approximately...

In this framework, we show that can get a filtering of two carrier frequency (two defect modes) by the presence segment in one-dimensional photonic comb-like structure, is composed segment, along which dangling side branches are grafted periodically play role resonator. The band structure with length (geometrical defect) shows filters based on modes decreased increase opposite behavior their transmission and quality factor. permittivity dielectric material transmission, reduced frequency,...

In this paper, we study theoretically the transmission spectrum and dispersion relation of a periodic photonic comb-like waveguide consisting segments length d1 along which two different symmetric or asymmetric resonators lengths d2 d3 are grafted in each site. We presence geometrical defects on spectrum. The creation at levels d02 d03 inside perfect structure; enable to deduce localized states (defects modes) band gaps. research, demonstrate existence frequencies filtering with single...

In this paper, we study a perfect quasi-periodic system, consisting of periodicity segments length d <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</inf> and N' closed resonators lengths xmlns:xlink="http://www.w3.org/1999/xlink">2j</inf> , in which the depend on each other according to an arithmetic sequence. Firstly, take single resonator between two semi-infinite guides indicate existence AIT resonance resonant modes move towards lower...

In this work, we study theoretically and analytically the electronic transport through a nanowire structure composed of finite cylindrical quantum wire (CQWR) based on barrier AlGaAs semiconductor, sandwiched between two semi-infinite GaAs well wires (CQWWRs). Using Green function approach to determine artificial nanostructure, which is analyzed as geometrical physical parameters nanowires structure. The results show eigen states (confined states), when they interact with incoming waves from...

Using the transfer matrix (TM) method, propagation of electrons is studied, in a one-dimensional multi-quantum well composed alternating layers barriers and wells. In first time, we proposed system with single barrier CdMnTe embedded between two semi-infinite substrates. Hence, corresponding Eigen modes energies were found to be shifted towards lower as thickness increases. The resulting are characterized by high transmission rates but very low quality factor values, which highlight...

In this paper using the transfer matrix method (TMM), we consider an electronic comb-like waveguides system composed by periodicity of segment semiconductor (GaAs type) length and grafted in its extremity one resonator (GaAlAs . These segments resonators are considered quantum wires. The perfect question presents pass bands band gaps which allow to control manipulate electrons waves whose energy is identical gaps. We insert defect at level middle question. Hence, very narrow localized states...

In the framework of Green Function approach, we determine transmission spectrum and band structure detective one-dimensional photonic star waveguides. This is composed backbones' periodicity that characterized by negative magnetic permeability μ positive dielectric permittivity ϵ, grafted in each site resonators permeability. middle structure, consider geometrical or/and material defect at backbone level. The presence such this creates inside gaps perfect very narrow filtered frequencies...