Design and modeling of a photonic integrated device for optical vortex generation in a silicon waveguide

We propose and numerically verify a design of the photonic integrated circuit for in-plane generation of a 1st azimuthal order vortex mode in dielectric rectangular waveguides. Radiation is introduced into the proposed structure in a standard way through two grating couplers. Applying a mode couplin...

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Bibliographic Details
Published inKompʹûternaâ optika Vol. 45; no. 3; pp. 324 - 330
Main Authors Kutluyarov, R.V., Fatkhiev, D.M., Stepanov, I.V., Grakhova, E.P., Lyubopytov, V.S., Sultanov, A.K.
Format Journal Article
LanguageEnglish
Published Samara National Research University 01.06.2021
Subjects
in-plane generation
integrated photonics
optical waveguides
orbital angular momentum
silicon-on-insulator
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Summary:We propose and numerically verify a design of the photonic integrated circuit for in-plane generation of a 1st azimuthal order vortex mode in dielectric rectangular waveguides. Radiation is introduced into the proposed structure in a standard way through two grating couplers. Applying a mode coupling and specific phase shift, a field with the required amplitude-phase distribution is formed directly in the output waveguide. The geometric dimensions of the device are simulated and optimized to fit the technological parameters of the silicon-on-insulator platform.
ISSN:0134-2452
2412-6179
DOI:10.18287/2412-6179-CO-850