Band structure and photonic band gap in comb-like structure asymmetric with left-handed materials

Errouas, Younes; Tahri, Zakaria; Ben-Ali, Youssef; Bria, Driss

doi:10.1109/isacs48493.2019.9068926

Cited by 2 publications

(2 citation statements)

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“…Several authors have studied the electromagnetic filter based on Fano and EIT (electromagnetically induced transparency) resonances [22]. The coupling of photonic waveguides with one or more resonators has been studied and applied to obtain Fano and EIT resonances [23][24][25][26][27][28][29]. In transmission spectra, the Fano profile appears as a maximum transmission peak near a transmission zero [14,15].…”

Section: Introductionmentioning

confidence: 99%

“…The first defect consists in changing a resonator of length d 2 located in the site J by another resonator of length d 02 ; the second defect consists in changing a resonator of length d 3 located in the site J by another resonator of length d 03 ; and the third defect consists in changing a segment of length d 1 located between the sites J and J + 1 by another segment of length d 01 . Therefore, the disturbed states are: M s = {−1, 0, J, J + 1, N, N + 1}[25][26][27][28][29].…”

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confidence: 99%

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Metamaterials Photonic Filter Based on Electromagnetically Induced Transparency Resonance

Errouas,

El Kadmiri,

Ben-Ali

et al. 2024

PIER M

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In this paper, we give an analytical demonstration of electromagnetic induced transparency (EIT) resonance by a simple photonic device consisting of two grafted resonators (metamaterials of type Epsilon Negative Gauchy (ENG)) of lengths d2 and d3. Then, we study theoretically the transmission spectrum and the dispersion relation of periodic photonic comb-like waveguides system built of periodic segments of length d1 (of right-handed material). The electrical permittivity, ε, of the two asymmetric resonators with lengths d2 and d3, depends on the frequency of the incident waves (ENG material). The presence of geometrical (ENG resonators) defects inside the perfect structure creates the defect modes inside the band gaps. Consequently, we demonstrate the existence of two filtered frequencies. This structure can be used as a new photonic filter in the microwave range with an important quality factor and a high transmission rate.

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