Modeling of the processes involved in the formation and propagation of optical vortex beams generated by microring resonators

Bagmanov, V.K., Bakirova L.I., Voronkov G.S., Lyubopytov V.S.

For Russian citation (Opticheskii Zhurnal):

Багманов В.Х., Бакирова Л.И., Воронков Г.С., Любопытов В.С. Моделирование процессов формирования и распространения оптических вихревых пучков, излучаемых микрокольцевыми резонаторами // Оптический журнал. 2025. Т. 92. № 7. С. 3–12. http://doi.org/10.17586/1023-5086-2025-92-07-3-12

For citation (Journal of Optical Technology):

Abstract:

Subject of study. Microring resonators with a radiation-emitting diffraction grating, formed by periodic holes on its surface. Aim of study. Developing mathematical models for the generation and radiation spatial distribution of the optical vortex beams carrying orbital angular momentum using microring resonators. Method. The process of optical beam radiation from a microring resonator is described using the general theory of electromagnetic wave scattering by dielectric inhomogeneities in the Rayleigh approximation. Optical vortex beam formation is considered in terms of the vector representation of electromagnetic fields, based on the Kirchhoff–Helmholtz integral theorem. Numerical simulations were performed in the Ansys Lumerical software environment. Main results. Analytical expressions have been derived that allow us to determine the spatial distribution of the electric field and the energy flux density, emitted by a microring resonator, depending on the configuration of the resonator and the parameters of the periodic holes on its surface, the region of maximum energy flux density, depending on the topological charge of the optical vortex beam produced by the resonator. To verify and confirm the accuracy of the second part of the mathematical model, additional numerical simulations were performed in the Ansys Lumerical environment. Practical significance. The findings of the study can be utilized to enhance the efficiency and optimize communication channels in the promising optical information technologies.

Keywords:

optical vortex beam, microring resonator, orbital angular momentum, diffraction

Acknowledgements:

the research is supported by the Ministry of Science and Higher Education of the Russian Federation within the state assignment for UUST (agreement № 075-03-2024-123/1 dated 15.02.2024) and conducted in the research laboratory "Sensor systems based on integrated photonics devices" of the Eurasian Scientific and Educational Center

OCIS codes: 050.4865, 30.3120, 260.6042

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