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Received probability of perfect optical vortex in absorbent and weak turbulent seawater links

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Abstract

We investigated the effects of absorbent and weak turbulent seawater channels on the orbital angular momentum (OAM) mode carried by perfect optical vortex (POV) based on the Rytov approximation. After deriving the received probability of OAM modes, some numerical results are worked out to show that the receiving probability of OAM modes decreases linearly with the increase of virtual refractive index of the water body. An underwater communication link with POV as the signal carrier can obtain high receiving probability by adopting long signal wavelength in intervals of “seawater window wavelength,” low OAM quantum number, a POV with a larger ring radius, and a transmitter as well as receiver with a smaller aperture. The transmission distance of OAM mode carried by POV in four kinds of seawater is better than that of a Bessel–Gaussian beam.

© 2021 Optical Society of America

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Data Availability

All the numerical data in this paper are real and available. Data underlying the results about absorption coefficient ${n _I}$ n I presented in this paper are available in Refs. [3,27].

3. G. Molina-Terriza, J. P. Torres, and L. Torner, “Management of the angular momentum of light: preparation of photons in multidimensional vector states of angular momentum,” Phys. Rev. Lett. 88, 013601 (2001). [CrossRef]  

27. H. Berberoglu, L. Pilon, and A. Melis, “Radiation characteristics of chlamydomonas reinhardtii cc125 and its truncated chlorophyll antenna transformants tla1, tlax and tla1-cw+,” Int. J. Hydrogen Energy 33, 6467–6483 (2018). [CrossRef]  

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