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Volume 22
Issue 3
10.3390/s22030890
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Article

Free-Space Transmission and Detection of Variously Polarized Near-IR Beams Using Standard Communication Systems with Embedded Singular Phase Structures

by
Sergey V. Karpeev
1,2,
Vladimir V. Podlipnov
1,2,*,
Svetlana N. Khonina
1,2,
Nikolay A. Ivliev
1,2 and
Sofia V. Ganchevskay
1,2
1
IPSI RAS-Branch of the FSRC “Crystallography and Photonics” RAS, 443001 Samara, Russia
2
Samara National Research University, 443086 Samara, Russia
*
Author to whom correspondence should be addressed.
Sensors 2022, 22(3), 890; https://doi.org/10.3390/s22030890
Submission received: 30 November 2021 / Revised: 13 January 2022 / Accepted: 20 January 2022 / Published: 24 January 2022
(This article belongs to the Special Issue UV, Infrared and THz Radiation Sensing System)
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Abstract

We propose to achieve multichannel information transmission in free space by means of variously polarized beams. The interaction of vortex beams of various orders with the main polarization states is theoretically analyzed. The passage of beams with different polarization states through multi-order diffractive optical elements (DOEs) is simulated numerically. Using the simulation results, tables of code correspondence of diffraction order numbers to the presence of phase vortices in the analyzed beams are constructed, which allow one to determine diffraction orders that carry information about various polarization states. The performed experiment made it possible to study the recognition of the first order cylindrical polarization state formed by a Q-plate converter using a phase DOE. In the experiment, these elements were built into a commercial fiber-optic communication system operating at the near-IR frequencies. After detecting the beam polarization state, beams of the required diffraction orders are efficiently coupled into optical fiber using an additional phase element. The developed optical detection system also provides channel suppression of homogeneously polarized components, which are supposed to be used for transmission of other channels.
Keywords: free-space optics; polarization recognition; efficient beam coupling; blazed grating free-space optics; polarization recognition; efficient beam coupling; blazed grating

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MDPI and ACS Style

Karpeev, S.V.; Podlipnov, V.V.; Khonina, S.N.; Ivliev, N.A.; Ganchevskay, S.V. Free-Space Transmission and Detection of Variously Polarized Near-IR Beams Using Standard Communication Systems with Embedded Singular Phase Structures. Sensors 2022, 22, 890. https://doi.org/10.3390/s22030890

AMA Style

Karpeev SV, Podlipnov VV, Khonina SN, Ivliev NA, Ganchevskay SV. Free-Space Transmission and Detection of Variously Polarized Near-IR Beams Using Standard Communication Systems with Embedded Singular Phase Structures. Sensors. 2022; 22(3):890. https://doi.org/10.3390/s22030890

Chicago/Turabian Style

Karpeev, Sergey V., Vladimir V. Podlipnov, Svetlana N. Khonina, Nikolay A. Ivliev, and Sofia V. Ganchevskay. 2022. "Free-Space Transmission and Detection of Variously Polarized Near-IR Beams Using Standard Communication Systems with Embedded Singular Phase Structures" Sensors 22, no. 3: 890. https://doi.org/10.3390/s22030890

APA Style

Karpeev, S. V., Podlipnov, V. V., Khonina, S. N., Ivliev, N. A., & Ganchevskay, S. V. (2022). Free-Space Transmission and Detection of Variously Polarized Near-IR Beams Using Standard Communication Systems with Embedded Singular Phase Structures. Sensors, 22(3), 890. https://doi.org/10.3390/s22030890

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