Optimization of mode propagation for an embedier of optical vortex beams based on a micro-ring resonator

Light beams with orbital angular momentum have unique properties that make them valuable for research and practical applications. From revolutionizing communication technologies to enabling advanced microscopy and quantum computing possibilities, these beams continue to drive innovation and open up new frontiers in optics and photonics. In this paper, the dependence of the radiation flux density of an optical vortex beam on the geometry of the emitting structure is investigated. A micro-ring resonator with periodic structures is used as an optical vortex beam emitter structure. In our study, optimizing the width of the ring waveguide leads to an increase in the radiation flux power up to 30% for the resonant wavelength of 1563 nm. To analyze how the whispering gallery modes are distributed in the cross section of the annular waveguide, we increased the annular waveguide width from 400 nm to 500 nm. This proposed approach can be applied to radiating micro-ring resonators in various applications.