Two-Channel Demultiplexer Based on 1d Photonic Star Waveguides Using Defect Resonators Modes

Ben-Ali, Youssef; Kadmiri, Ilyass El; Ghadban, Amina; Ghoumid, Kamal; Mazari, Abdelfattah; Bria, and Driss

doi:10.2528/pierb21061203

Cited by 6 publications

(4 citation statements)

References 36 publications

(51 reference statements)

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“…I. Erdogan et al [8] have studied the effect of laser field on the self-polarization of a donor impurity in a finite Ga1-xAlxAs/GaAs quantum well. Furthermore, we find other researchers who studied the band structures and even the electron transport in MQWs by determining their physical properties (transmission, reflection, dispersion relation ...) using the Green's function [9], or the transfer matrix [10]. For example, we find that A. Shokri [11] studied a periodic MQWs, composed of two alternating materials, GaAs-AlGaAs.…”

Section: Introductionmentioning

confidence: 87%

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Effect of the Introduction of a Staircase Defect on the Behavior of the Induced Electronic State in a MQWs Structure

Baidri¹,

Elamri²,

Falyouni³

et al. 2022

DDF

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This work investigates the behavior of the electronic states in ZnO/ Zn1-xMgxO MQWs induced by a staircase-like defect layer bounded by two substrates of the same type (ZnO). We use the interface response theory to calculate the different physical properties of the system. First, westudied a material staircase defect containing three material defects, such where the concentration depends on an increasing step noted P and a parameter X0 which does not exceed 0.35, so that the materials remain crystallized in the same structure. We found that the increase of these parameters induces an augmentation in the potential energy, leading to shifts of the electronic states to higher energies. In the second part, we studied the effect of introducing a geo-material defect with the step P=0.05 and X0=0 as optimal values, and the thickness of the staircase defect layer depends on an increment step noted S. We found that the variation of S influences the number of states that appear in the gap, which gives the possibility to improve the electron transport without using higher energy.Finally, we try to find several staircase defect configurations used in different structures. We found that inside the case of symmetric defect permutation, the position of the defect does not influence the behavior of the electronic states. Still, in the case of antisymmetric permutation, the position of thedefect has an influence on the behavior of the electronic states.

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Section: Introductionmentioning

confidence: 87%

“…For this, we use the interface response theory, also called the green function, which is based on cleavage and coupling operations. This theory is reviewed in several fields: electronics [19], electromagnetics [9], acoustics [18]. In our work, we use this theory for electrons in the framework of the effective mass approximation.…”

Section: Theoretical Modelmentioning

confidence: 99%

Effect of the Introduction of a Staircase Defect on the Behavior of the Induced Electronic State in a MQWs Structure

Baidri¹,

Elamri²,

Falyouni³

et al. 2022

DDF

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“…Moreover, CWDM demultiplexers based on photonic crystals offer significant advantages over conventional demultiplexers. These innovative devices are to exploit the unique optical properties of photonic crystals to efficiently separate signals at different wavelengths on a single optical fiber [ 8].…”

Section: Introductionmentioning

confidence: 99%

Analysis of a Modified Y-Branch CWDM Demultiplexer Based on Photonic Crystal Structure

El Mansouri,

Labbani

2024

J. Microw. Optoelectron. Electromagn. Appl.

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This paper attempts to investigate the design of a modified Y-shaped demultiplexer based on photonic crystal. The designed structure is used to select four telecommunication wavelengths. In our design, four resonant cavities (RC)are utilized. A square lattice of silicon (Si) rods immersed in air matrix is used as a fundamental structure. Thus, our study is to investigate the effect of various design parameters on the output frequency. To simulate the performance of the proposed device, the Finite Difference Time Domain (FDTD) approach is used. The obtained results show that the average power transmission, quality factor, channel spacing, crosstalk, and full width at half maximum, are 99.925 %, 4638.785, 19.6 nm, from -40,119 to -24,316 dB, and 0.325nm, respectively.Additionally, the proposed demultiplexer is very compact with a total footprint of 269µm 2 , which is very suitable to be utilized in compact photonic integrated circuits (PIC).

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“…Recently, one-dimensional (1D) photonic periodic waveguides system filters based on the resonators in the megahertz band have been widely concerned by different authors [13,14]. Ben-Ali et al studied the transmission spectra of a onedimensional photonic periodic star waveguides system with either left-handed materials or right-handed materials for ap-plications in reflector and passband filters [15,16]. Errouas et al also proposed a new system based on electromagnetic star waveguides, which are able to select and filter one or two incoming electromagnetic waves [17].…”

Section: Introductionmentioning

confidence: 99%

Tunable Filters Based on Fano Resonance Using Asymmetric Moving Resonators in a Single Loop System

El-Aouni,

Ben-Ali,

El Kadmiri

et al. 2024

PIER C

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We report a novel characteristic of the phenomenon of Fano resonance obtained by the interaction of incident electromagnetic waves and waveguides system formed of loop and resonators. The Green Function Method (GFM) is employed to calculate the transmittance of the incoming electromagnetic waves. Our proposed system achieve a selecting and filtering device either by total transmission or by total reflection with a very high performance. The proposed structure contains four segments of the same lengths, and asymmetric resonators (N and N ′ resonators) are moving in the structure. Through parameters optimization, we show that the system creates Fano resonances, which are sensitive to the variations of the segment lengths, the resonator lengths, the positions of the resonators, and the physical properties of the system components. Then, the proposed system is able to filter at least two resonance modes with different frequencies. This system has potential applications in the field of microwave communication antennas.

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Two-Channel Demultiplexer Based on 1d Photonic Star Waveguides Using Defect Resonators Modes

Cited by 6 publications

References 36 publications

Effect of the Introduction of a Staircase Defect on the Behavior of the Induced Electronic State in a MQWs Structure

Effect of the Introduction of a Staircase Defect on the Behavior of the Induced Electronic State in a MQWs Structure

Analysis of a Modified Y-Branch CWDM Demultiplexer Based on Photonic Crystal Structure

Tunable Filters Based on Fano Resonance Using Asymmetric Moving Resonators in a Single Loop System

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