Results 221 to 230 of about 1,033,242 (304)
Some of the next articles are maybe not open access.
Outage Probability Analysis for UOWC System Over Oceanic Turbulence With Pointing Errors
IEEE Communications Letters, 2023This letter proposes a combined underwater optical wireless communication (UOWC) system consisting of maximum ratio combining (MRC)-based direct link and optical intelligent reflecting surface (OIRS)-assisted indirect link.
I. Romdhane +4 more
semanticscholar +1 more source
IEEE Transactions on Communications, 2021
The perfect optical vortex (POV) beam with the characteristic of the topological charge (TC)- independence radial profile is first considered to improve the spatial-mode-based underwater wireless optical communication (UWOC) performance.
Wei Wang +5 more
semanticscholar +1 more source
The perfect optical vortex (POV) beam with the characteristic of the topological charge (TC)- independence radial profile is first considered to improve the spatial-mode-based underwater wireless optical communication (UWOC) performance.
Wei Wang +5 more
semanticscholar +1 more source
, 2021
In recent years, as the demand for underwater communication has increased, underwater wireless optical communication (UWOC) has attracted a lot of attentions.
Hai Zhan +3 more
semanticscholar +1 more source
In recent years, as the demand for underwater communication has increased, underwater wireless optical communication (UWOC) has attracted a lot of attentions.
Hai Zhan +3 more
semanticscholar +1 more source
Journal of Modern Optics, 2021
In the paper, we present the analytical expression of propagation characteristics of the autofocusing Airy beam (AAB) with power-exponent-phase beam carrying orbital angular momentum (OAM) mode (named AAB-PEPV), in weak anisotropic oceanic turbulence. We
Junzhe Wang +3 more
semanticscholar +1 more source
In the paper, we present the analytical expression of propagation characteristics of the autofocusing Airy beam (AAB) with power-exponent-phase beam carrying orbital angular momentum (OAM) mode (named AAB-PEPV), in weak anisotropic oceanic turbulence. We
Junzhe Wang +3 more
semanticscholar +1 more source
Phytoplankton's motion in turbulent ocean
Physical Review E, 2015We study the influence of turbulence on upward motion of phytoplankton. Interaction with the flow is described by the Pedley-Kessler model considering spherical microorganisms. We find a range of parameters when the upward drift is only weakly perturbed or when turbulence completely randomizes the drift direction.
Itzhak, Fouxon, Alexander, Leshansky
openaire +2 more sources
Light scattering on oceanic turbulence
Applied Optics, 2004Turbulent inhomogeneities of fluid flow have the effect of scattering light in near-forward angles, thus providing an opportunity to use optics to quantify turbulence. Here we report measurements of the volume-scattering function in the range of 10(-7) to 10(-3) rad using a wave-front sensing technique.
Darek J, Bogucki +3 more
openaire +2 more sources
Aperture-Averaged Angle-of-Arrival Fluctuations in Oceanic Turbulence of Arbitrary Strength
IEEE Transactions on Antennas and PropagationIn this work, the effects of aperture averaging on reducing the angle-of-arrival (AOA) fluctuations in oceanic turbulence of arbitrary strength are examined.
Xiang Yi +5 more
semanticscholar +1 more source
Optics & Laser Technology
In this paper, we derive a general and exact closed-form expression of scintillation index (SI) for a Gaussian beam propagating through weak oceanic turbulence, based on the general oceanic turbulence optical power spectrum (OTOPS) and the Rytov theory ...
Yuxuan Li +5 more
semanticscholar +1 more source
In this paper, we derive a general and exact closed-form expression of scintillation index (SI) for a Gaussian beam propagating through weak oceanic turbulence, based on the general oceanic turbulence optical power spectrum (OTOPS) and the Rytov theory ...
Yuxuan Li +5 more
semanticscholar +1 more source
Propagation characteristics of the perfect vortex beam in anisotropic oceanic turbulence.
Applied Optics, 2020The propagation model of orbital angular momentum (OAM) modes carried by the perfect vortex (pv) beam through anisotropic oceanic turbulence links is established and the factors influencing the OAM propagation are discussed.
Zonghua Hu +8 more
semanticscholar +1 more source
Turbulence and mixing in the ocean
Reviews of Geophysics, 1995Without turbulence and the mixing it causes, we would not have the same ocean that we do now, nor indeed the same climate. Turbulent mixing brings nutrients into the surface layer from below so that plankton can grow. Turbulence near the surface, driven by surface winds and cooling, transmits heat in and out of the ocean to create the reservoir of heat
Douglas R. Caldwell, James N. Mourn
openaire +1 more source