Diffraction propagation of vortex diffractals

Korolenko, P. V.; Kubanov, R. T.; Pavlov, N. N.; Zotov, A. M.

doi:10.1088/1742-6596/2091/1/012072

Cited by 2 publications

(1 citation statement)

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“…[10][11][12] Still others have theoretically explored the transmission and diffraction of continuous and complex fractal patterns calculated via a cylindrical 2-D Weierstrauss function. 13 Temporal fractal encoding schemes are also proposed. 14 Towards applications, the facile fabrication of fractal digital masks or grating structures favors intensity-modulated direct detection (IM/DD) schemes.…”

Section: Introductionmentioning

confidence: 99%

Optical demultiplexing with fractal-structured beams in turbulent atmospheric environments

Weng,

Vuong

2023

Environmental Effects on Light Propagation and Adaptive Systems VI

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When information is spatially repeated in self-similar fractal beam patterns, only a portion of the diffracted beam is needed to reconstruct the kernel data. What is unique to a fractal-encoding scheme is that the image demultiplexing process can be, to a first approximation, easily performed optically. In prior work, we experimentally and numerically study fractal-encoded optical beams and their mid- and far-field propagation without added turbulence. Here, we present preliminary simulations of fractal-encoded beams with high turbulence (C2n≥ 10−14 m−2/3 ) where we achieve respectable bit error rates of 10−3 . These results are impressive given that: data with low fractal orders is shown, simple threshold-algorithms are used (i.e., no machine learning), and only a third of the beam, off-axis, is needed. More robust channel encoding is associated with increased fractal orders, larger collection areas, and higher kernel singular value decomposition entropy.

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