Multi-channel filters with high performance based on the creation of a geometrical defect in 1D phononic star waveguides structure

Kadmiri, Ilyass El; Ben-Ali, Youssef; Errouas, Younes; Khaled, Aissam; Bria, Driss

doi:10.1016/j.matpr.2021.02.580

Cited by 6 publications

(2 citation statements)

References 43 publications

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“…3(b) indicates the transmission spectrum as a function of the reduced frequency in 1D perfect finite photonic CWGs, this curve shows the existence of three pass bands separated by large photonic band gaps. This result is similar to found in the acoustic [11,14], and photonic [15] fields.…”

Section: Properties Of a Perfect Periodic Structuresupporting

confidence: 90%

Electromagnetic Filtering with High Performance by one Dimensional Defective Comb-Like Waveguides Structure Using the Transfer Matrix

Touiss,

Errouas,

El Kadmiri

et al. 2023

E3S Web of Conf.

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In this paper, we study the propagation of electromagnetic waves in 1D photonic comb-like waveguides (CWGs) structure. This CWGs structure is constituted by a periodicity of segments of length d1 and grafted in each site by one resonator of length d2. This system creates the pass bands separated by large photonic band gaps where the electromagnetic waves cannot propagate. Our study focuses on the impact of a geometrical defect on the transmission spectrum. The creation of a defect of length d02 at the resonator in a perfect structure makes it possible to identify localized modes (defect modes) in the bandgaps. In this research, we demonstrate that a single defect at the resonator can lead to the filtering of two or more frequencies. The analytical calculation is performed using the transfer matrix method. This method aims to calculate the dispersion relation and the transmission rate. This structure has potential applications as an electromagnetic guiding, filtering and demultiplexing.

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Section: Properties Of a Perfect Periodic Structuresupporting

confidence: 90%

Electromagnetic Filtering with High Performance by one Dimensional Defective Comb-Like Waveguides Structure Using the Transfer Matrix

Touiss,

Errouas,

El Kadmiri

et al. 2023

E3S Web of Conf.

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“…Mouadili et al ex-perimentally crafted a photonic device leveraging EIT and Fano resonances [7]. Other notable works include investigations by Islam et al on double slot waveguides [8], El Kadmiri et al on multi-channel acoustic filters [9], and Khattab et al on acoustically induced transparency [10,11].…”

Section: Introductionmentioning

confidence: 99%

Multi-channel Electromagnetic Filters Based on EIT and Fano Resonances through Parallel Segments and Asymmetric Resonators

Khattab,

Touiss,

El Kadmiri

et al. 2024

PIER Letters

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In this study, we investigate electromagnetically induced transparency (EIT) and Fano resonances, focusing on the propagation of electromagnetic waves in a system of parallel waveguides associated with asymmetric resonators. Our design includes five waveguides and two resonators, generating discrete modes influenced by their respective lengths. The EIT resonance is characterized by a prominent transmission peak flanked by two transmission zeros, while the Fano resonance is characterized by a pronounced transmission peak adjacent to a transmission zero. Using the transfer matrix method (TMM), we calculate transmission and reflection rates. Our results indicate that the EIT resonance appears when the resonator lengths show slight differences, whereas the Fano resonance appears when the resonator lengths are identical. Both resonances are sensitive to resonator lengths and permittivity indices. Consequently, the geometrical parameters of the system must be carefully selected according to the application in question, whether waveguiding or multi-channel electromagnetic filtering.

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Selective Filter System Based on Multi-Defectives Resonators Inserted in 1D Acoustic Periodic Star Waveguides

El Kadmiri,

Errouas,

Ben-Ali

et al. 2024

Lecture Notes in Networks and Systems

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Multi-channel filters with high performance based on the creation of a geometrical defect in 1D phononic star waveguides structure

Cited by 6 publications

References 43 publications

Electromagnetic Filtering with High Performance by one Dimensional Defective Comb-Like Waveguides Structure Using the Transfer Matrix

Electromagnetic Filtering with High Performance by one Dimensional Defective Comb-Like Waveguides Structure Using the Transfer Matrix

Multi-channel Electromagnetic Filters Based on EIT and Fano Resonances through Parallel Segments and Asymmetric Resonators

Selective Filter System Based on Multi-Defectives Resonators Inserted in 1D Acoustic Periodic Star Waveguides

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