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Open AccessArticle

Generation of Vortex Optical Beams Based on Chiral Fiber-Optic Periodic Structures

Department of Telecommunications, Ufa State Aviation Technical University, 450008 Ufa, Russia
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Sensors 2020, 20(18), 5345; https://doi.org/10.3390/s20185345
Received: 22 August 2020 / Revised: 11 September 2020 / Accepted: 17 September 2020 / Published: 18 September 2020
(This article belongs to the Special Issue Fiber Bragg Grating Based Sensors and Systems)
In this paper, we consider the process of fiber vortex modes generation using chiral periodic structures that include both chiral optical fibers and chiral (vortex) fiber Bragg gratings (ChFBGs). A generalized theoretical model of the ChFBG is developed including an arbitrary function of apodization and chirping, which provides a way to calculate gratings that generate vortex modes with a given state for the required frequency band and reflection coefficient. In addition, a matrix method for describing the ChFBG is proposed, based on the mathematical apparatus of the coupled modes theory and scattering matrices. Simulation modeling of the fiber structures considered is carried out. Chiral optical fibers maintaining optical vortex propagation are also described. It is also proposed to use chiral fiber-optic periodic structures as sensors of physical fields (temperature, strain, etc.), which can be applied to address multi-sensor monitoring systems due to a unique address parameter—the orbital angular momentum of optical radiation. View Full-Text
Keywords: fiber Bragg gratings; chiral structures; orbital angular momentum; apodization; chirp; coupled modes theory fiber Bragg gratings; chiral structures; orbital angular momentum; apodization; chirp; coupled modes theory
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MDPI and ACS Style

Gizatulin, A.; Meshkov, I.; Vinogradova, I.; Bagmanov, V.; Grakhova, E.; Sultanov, A. Generation of Vortex Optical Beams Based on Chiral Fiber-Optic Periodic Structures. Sensors 2020, 20, 5345.

AMA Style

Gizatulin A, Meshkov I, Vinogradova I, Bagmanov V, Grakhova E, Sultanov A. Generation of Vortex Optical Beams Based on Chiral Fiber-Optic Periodic Structures. Sensors. 2020; 20(18):5345.

Chicago/Turabian Style

Gizatulin, Azat; Meshkov, Ivan; Vinogradova, Irina; Bagmanov, Valery; Grakhova, Elizaveta; Sultanov, Albert. 2020. "Generation of Vortex Optical Beams Based on Chiral Fiber-Optic Periodic Structures" Sensors 20, no. 18: 5345.

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