Journal
APPLIED OPTICS
Volume 60, Issue 35, Pages 10772-10779Publisher
Optica Publishing Group
DOI: 10.1364/AO.442765
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Funding
- Jiangsu Province Postgraduate Research And Innovation Plan [SJCX20_0764]
- NationalNatural Science Foundation of China [61871202]
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In this study, the effects of absorbent and weak turbulent seawater channels on the orbital angular momentum (OAM) mode carried by perfect optical vortex (POV) were investigated. Results show that the receiving probability of OAM modes decreases linearly with the increase of virtual refractive index of the water body. A high receiving probability underwater communication link can be achieved by using long signal wavelength, low OAM quantum number, and a POV with a larger ring radius.
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. (C) 2021 Optical Society of America
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