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1

Transverse electric guided modes in metal-LHM-ferrite slab waveguide structures

Elwasife Khitam Y., Al Massri Mustafa R., Taya Sofyan A.

Optica Applicata

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2024

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Vol. 54, nr 1

31--40

EN

TE guided modes at microwave frequencies in metal-left-handed material-ferrite waveguide structures are studied numerically. The effect of ferrite layer parameters on the dispersion properties of the waveguide structure is investigated in details. It is found that the modal index of the guided mode is negative as if the overall structure was left-handed material. A considerable effect of the gyromagnetic ferrite layer on the dispersion properties of the structure is observed. The power propagating in each layer is also evaluated.

2

Ternary photonic crystal with left-handed material layer for refractometric application

Taya S. A.

Opto-Electronics Review

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2018

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Vol. 26, No. 3

236--241

EN

A ternary photonic crystal with left-handed material (LHM) layer is examined for refractometric applications. One of the layers is assumed to be air and treated as an analyte. The transmittance from the ternary photonic crystal is studied in details and the wavelength shift due to the change in the refractive index of the analyte is investigated. The transmittance is investigated with the parameters of the LHM. It is found that the wavelength shift can be significantly enhanced with the decrease of both real part of the LHM permittivity and thickness.

3

Effect of dissipation factor on reflected and transmitted powers of a structure containing left-handed material waveguide

Ubeid M.F., Shabat M.M., Sid-Ahmed M.O.

International Letters of Chemistry, Physics and Astronomy

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2013

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Vol. 3

1-11

EN

In this paper a waveguide structure consisting of a pair of left-handed material (LHM) and dielectric slabs inserted in vacuum is investigated theoretically. Two cases of the LHM are considered, loss-less case and loss case as well as the frequency dependence of permittivity and permeability of it is taken into account. Maxwell's equations are used to determine the electric and magnetic fields of the incident waves at each layer. Snell's law is applied and the boundary conditions are imposed at each layer interface to calculate the reflected, transmitted and loss powers of the structure. Numerical results are illustrated to show the effect of frequency, angle of incidence and LHM thickness on the mentioned powers when the dissipation factor changes. The obtained results are in agreement with the law of conservation of energy.

4

Theoretical study of slab waveguide optical sensor with left-handed material as a core layer

Taya S. A., El-Agez T. M., Kullab H. M., Abadla M. M., Shabat M. M.

Optica Applicata

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2012

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Vol. 42, nr 1

193-205

EN

A three-layer planar waveguide sensor consisting of thin left-handed material core layer is investigated for sensing applications. The sensitivity of the proposed sensor to the changes in the refractive index of the cladding is presented and studied for TE-polarized light. It is observed that the sensitivity of the proposed sensor is improved compared to that of the conventional three-layer slab waveguide sensor. It is also found that the sensitivity of the structure proposed is negative and critically dependent on the dispersive permittivity and permeability of the core layer.