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Registration Number

0213U004264, 0113U003668 , R & D reports

Title

Unsteady processes in metamaterials included active and nonlinear components

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Head

Lytvynenko Leonid M.,

Registration Date

30-10-2013

Organization

Institute of Radio Astronomy of Academy of Sciences of Ukraine

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The optical properties of photonic structures containing magnetic and non-linear layers which are under the influence of an external static magnetic field applied to the Faraday geometry were investigated. The alteration of periodicity is established by repositioning structure periods of structure with one of the layers doubled to create a defect where periodicity is violated. It is shown that the structure under study strong enhancement of nonreciprocity is observed at the frequencies of the defect modes, where linearly polarized light incident from one side of the structure undergoes 90 degree polarization rotation upon refection, while light reflected from the other side has its polarization unchanged. Using the nonlinear transfer matrix calculations in the frequency domain, it is demonstrated that defect resonances in the nonlinear refection spectra undergo bending, resulting in polarization bistability of reflected light. This bistability is shown to result in abrupt switching between linear polarization of the output reflected light when the input intensity is varied. The existence of such a polarization switching is confirmed through the time domain numerical simulation by finite difference method simulation.

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Грибовський Олександр Володимирович
Младьонов Павло Леонідович
Просвірнін Сергій Леонідович
Сидорчук Наталія Віленовна
Туз Володимир Ростиславович
Хардіков В'ячеслав Володимирович