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22 May 2020 Forming vortex Bessel beam for optical communication at the wavelength of 1530 nm
S. V. Karpeev, V. D. Paranin, V. V. Podlipnov
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Proceedings Volume 11516, Optical Technologies for Telecommunications 2019; 1151603 (2020) https://doi.org/10.1117/12.2564857
Event: XVII International Scientific and Technical Conference "Optical Technologies for Telecommunications", 2019, Kazan, Russian Federation
Abstract
An interference polarizer for forming a radially-polarized zero-order vortex Bessel beam with the wavelength of 1530 nm has been developed. The polarizer contains 33 layers of SiO2 / Nb2O5 evaporated on a glass substrate using the vacuum electron beam method. The measurement of polarizer characteristics showed the ratio of transmittance of radially- and azimuthally-polarized beams to be 80:1 – 90:1 with the angle of incidence equal to 24.5 – 25°. The transmittance of radially-polarized light was not less than 75%. A radially-polarized zero-order vortex Bessel beam of high optical quality was formed with the help of the developed polarizer and a diffractive axicon.
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S. V. Karpeev, V. D. Paranin, and V. V. Podlipnov "Forming vortex Bessel beam for optical communication at the wavelength of 1530 nm", Proc. SPIE 11516, Optical Technologies for Telecommunications 2019, 1151603 (22 May 2020); https://doi.org/10.1117/12.2564857
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KEYWORDS
Bessel beams
Polarizers
Axicons
Optical communications
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