Propagation of modulated optical beams carrying orbital angular momentum in turbid water

Cochenour, Brandon; Morgan, Kaitlyn; Miller, Keith; Johnson, Eric; Dunn, Kaitlin J.; Mullen, Linda

doi:10.1364/ao.55.000c34

Cited by 42 publications

(10 citation statements)

References 11 publications

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“…With the growing demand of underwater optical communication(UOC), as well as the increasing needs of underwater imaging systems and sensor networks, the propagation properties of vortex beams carrying orbital angular momentum (OAM) has attracted a wider attention in an underwater environment [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]. The OAM modes with different topological charges are orthogonal to each other, which make it possible for OAM modes used as a new degree of freedom for information multiplexing, where the capacity, as well as the bandwidth efficiency, can be greatly enhanced.…”

Section: Introductionmentioning

confidence: 99%

Influence of oceanic turbulence on propagation of Airy vortex beam carrying orbital angular momentum

Wang

Yang²,

Zhao

2019

Optik

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With Rytov approximation theory, we derive the analytic expression of detection probability of Airy vortex beam carrying orbital angular momentum (OAM) through an anisotropic weak oceanic turbulence. We investigate the influences of turbulence parameters and beam parameters on the propagation properties of Airy-OAM beam. The numerical simulation results show that the anisotropic oceanic turbulence with a lower dissipation rate of temperature variance, smaller ratio of temperature and salinity contributions to the refractive index spectrum, higher dissipation rate of kinetic energy per unit mass of fluid, bigger inner scale factor, larger anisotropic coefficient causes the larger detection probability of Airy-OAM beam. Moreover, the Airy-OAM beam with a smaller topological charge, larger main ring radius and longer wavelength, has strong resistance to oceanic turbulent interference. Additionally, the detection probability decreases with the increase of receiving aperture size. In comparison with Laguerre-Gaussian-OAM beam, Airy-OAM beam has more anti-interference to turbulence when its topological charge is larger than 5 due to its non-diffraction and self-healing characteristics. The results are useful for underwater optical communication link using Airy-OAM beam.

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Section: Introductionmentioning

confidence: 99%

Influence of oceanic turbulence on propagation of Airy vortex beam carrying orbital angular momentum

Wang

Yang²,

Zhao

2019

Optik

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“…Recent works have focused on the beam structure for different orders of OAM after passing through diffuse media 7,8,13 . As a beam passes through diffuse media, the light is scattered the polarization becomes random and the beam's power decreases 14 .Studies of OAM propagation have treated transmission through multi scattering media for communication purposes, including transmission through atmosphere, desert environment and underwater 6,12,[15][16][17][18] . In such studies, transmittance was examined as a function of the topological charge, ℓ , representing the order of OAM.…”

mentioning

confidence: 99%

“…Studies of OAM propagation have treated transmission through multi scattering media for communication purposes, including transmission through atmosphere, desert environment and underwater 6,12,[15][16][17][18] . In such studies, transmittance was examined as a function of the topological charge, ℓ , representing the order of OAM.…”

mentioning

confidence: 99%

OAM light propagation through tissue

Biton

Kupferman

Arnon

2021

Sci Rep

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A major challenge in use of the optical spectrum for communication and imaging applications is the scattering of light as it passes through diffuse media. Recent studies indicate that light beams with orbital angular momentum (OAM) can penetrate deeper through diffuse media than simple Gaussian beams. To the best knowledge of the authors, in this paper we describe for the first time an experiment examining transmission of OAM beams through biological tissue with thickness of up to a few centimeters, and for OAM modes reaching up to 20. Our results indicate that OAM beams do indeed show a higher transmittance relative to Gaussian beams, and that the greater the OAM, the higher the transmittance also up to 20, Our results extend measured results to highly multi scattering media and indicate that at 2.6 cm tissue thickness for OAM of order 20, we measure nearly 30% more power in comparison to a Gaussian beam. In addition, we develop a mathematical model describing the improved permeability. This work shows that OAM beams can be a valuable contribution to optical wireless communication (OWC) for medical implants, optical biological imaging, as well as recent innovative applications of medical diagnosis.

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“…Furthermore, our analysis is intended to thoroughly extend previous studies performed with the same scattering system. 18,19,42 The sample is placed in a Hellma quartz cuvette with a fixed path length L ¼ 1 cm. The concentrations are reported in Table 1 together with the scattering length, as well as the scattering and the attenuation coefficients.…”

Section: Methodsmentioning

confidence: 99%

“…In this regard, studies comparing the transmittance to the Gaussian spatial mode on scattering media simulating real tissue properties have been carried out. [18][19][20] In this context, it becomes of fundamental importance to investigate how the structure of OAM modes can be degraded by scattering and turbulent media. In particular, this has been investigated in communications through scattering media, 21 atmospheric turbulence, [22][23][24] and underwater.…”

Section: Introductionmentioning

confidence: 99%

Transmission of vector vortex beams in dispersive media

et al. 2020

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Scattering phenomena affect light propagation through any kind of medium from free space to biological tissues. Finding appropriate strategies to increase the robustness to scattering is the common requirement in developing both communication protocols and imaging systems. Recently, structured light has attracted attention due to its seeming scattering resistance in terms of transmissivity and spatial behavior. Moreover, correlation between optical polarization and orbital angular momentum (OAM), which characterizes the so-called vector vortex beams (VVBs) states, seems to allow for the preservation of the polarization pattern. We extend the analysis by investigating both the spatial features and the polarization structure of vectorial optical vortexes propagating in scattering media with different concentrations. Among the observed features, we find a sudden swift decrease in contrast ratio for Gaussian, OAM, and VVB modes for concentrations of the adopted scattering media exceeding 0.09%. Our analysis provides a more general and complete study on the propagation of structured light in dispersive and scattering media.

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Propagation of modulated optical beams carrying orbital angular momentum in turbid water

Cited by 42 publications

References 11 publications

Influence of oceanic turbulence on propagation of Airy vortex beam carrying orbital angular momentum

Influence of oceanic turbulence on propagation of Airy vortex beam carrying orbital angular momentum

OAM light propagation through tissue

Transmission of vector vortex beams in dispersive media

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