Paper
6 September 2024 Mode propagation optimization for a microring-based optical vortex beam emitter
Author Affiliations +
Proceedings Volume 13168, Optical Technologies for Telecommunications 2023; 131681I (2024) https://doi.org/10.1117/12.3026508
Event: Optical Technologies for Telecommunications 2023, 2023, Kazan, Russian Federation
Abstract
Vortex beams, characterized by a spiral phase distribution and bearing orbital angular momentum, have unique properties that make them valuable for the research and practical applications. Such beams are used in optical communications, optical manipulation, including tweezers, super-diffraction limit imaging, mode-division multiplexing, and quantum coding. This work investigates the dependence of the radiation flux density of an emitted optical vortex beam depending on the emitting structure geometry. A micro-ring resonator with etched holes is used as a vortex beam emitter. In our study, optimizing the width of the ring waveguide leads up to 30% for the resonant wavelength 1563 nm increase in the power flow density. In order to analyze how the whispering gallery modes are distributed in the cross-section of the ring waveguide, we enlarged the width of the ring waveguide from 400 nm to 500 nm. This approach can be applied to radiating micro-ring resonators in various applications.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
Liaisan I. Bakirova, Grigory S. Voronkov, Vladimir S. Lyubopytov, Ivan V. Stepanov, Ruslan V. Kutluyarov, Elizaveta P. Grakhova, and Valeriy Kh. Bagmanov "Mode propagation optimization for a microring-based optical vortex beam emitter", Proc. SPIE 13168, Optical Technologies for Telecommunications 2023, 131681I (6 September 2024); https://doi.org/10.1117/12.3026508
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KEYWORDS
Waveguides

Optical vortices

Whispering gallery modes

Beam propagation method

Beam divergence

Mathematical optimization

Microresonators

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