Guiding properties of a planar waveguide based on a three-periodic magnetophotonic crystal

Glukhov I.A., Panyaev I.S., Sannikov D.G., Dadoenkova Y.S., Dadoenkova N.N.

For Russian citation (Opticheskii Zhurnal):

Глухов И.А., Паняев И.С., Санников Д.Г., Дадоенкова Ю.С., Дадоенкова Н.Н. Направляющие свойства планарного волновода на основе трехпериодического магнитофотонного кристалла // Оптический журнал. 2025. Т. 92. № 9. С. 24–34. http://doi.org/10.17586/1023-5086-2025-92-09-24-34

Glukhov I.A., Panyaev I.S., Sannikov D.G., Dadoenkova Yu.S., Dadoenkova N.N. Guiding properties of a planar waveguide based on a three-periodic magnetophotonic crystal [in Russian] // Opticheskii Zhurnal. 2025. V. 92. № 9. P. 24–34. http://doi.org/10.17586/1023-5086-2025-92-09-24-34

For citation (Journal of Optical Technology):

Abstract:

Subject of study. Optical waveguide based on a one-dimensional three-periodic magnetophotonic crystal formed by dielectrics layers and ferrite garnet layers magnetized to saturation. Aim of study. Finding the existence frequency regions for hybrid modes and establishing the polarization structure of guided modes in a magnetophotonic waveguide, as well as determining the degree of influence of 180° magnetization reversal and magneto-optical layers demagnetization on the type of dispersion spectra. Method. 4ґ4 transfer matrix method. Main results. The influence of parameters of the magnetic and non-magnetic layers (the subcell’s period numbers and bigyrotropy) on the eigenwave spectra of a photonic-crystal waveguide has been investigated. It is shown that the magnetization of the layers leading to the hybrid mods formation from the TE- and TM- polarized modes of the unperturbed structure is the cause of appearance of the convergence regions of neighboring dispersion curves, as well as a noticeable (of about 9ґ10⁹ rad/s) frequency shift of the mode propagation constant compared to demagnetized state of the system. Practical significance. The results can be used in designing of new magneto-optical devices based on three-periodic photonic crystals working in the infrared regime (narrow-band tunable filters, beam formers of laser diodes for optical communications, etc.).

Keywords:

magnetophotonic crystal, optical waveguide

Acknowledgements:

this work was supported by the Russian Science Foundation, project № 23-22-00466.

OCIS codes: 230.7390, 230.4170, 160.3820

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