Optical orbital-angular-momentum-multiplexed data transmission under high scattering

Gong, Lei; Zhao, Qian; Zhang, Hao; Hu, Xinyao; Huang, Kun; Yang, Jiamiao; Li, Yinmei

doi:10.1038/s41377-019-0140-3

Cited by 224 publications

(100 citation statements)

References 55 publications

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“…resolution of linear differential equations, was demonstrated both theoretically and experimentally in an acoustic system that is protected by nontrivial topology against disorders and perturbations. When integrated with this and other state-of-the-art communication techniques [45][46][47], the building blocks proposed in our work may suggest a significant step towards acoustic communication circuits with complex functionalities.…”

Section: Discussionmentioning

confidence: 95%

“…Other related acoustic devices are also demonstrated and studied, such as a sorting and routing platform and strongly asymmetric propagation of edge states. All these interesting devices are designed based on the same platform and under the principle of topology, when integrated with other state-of-the-art communication techniques [32,33,[45][46][47], may boost the performance of existing acoustic devices to an unprecedented level.…”

Section: Introductionmentioning

confidence: 99%

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Acoustic topological devices based on emulating and multiplexing of pseudospin and valley indices

Gao

Mei

2020

New J. Phys.

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We present a design paradigm for acoustic devices in which robust and controllable transport of wave signals can be realized. These devices are based on a simple acoustic platform, where different topological phases such as acoustic quantum spin Hall and quantum valley Hall insulators are emulated by engineering the spatial symmetries of the structure. Edge states along interfaces between different topological phases are shown to be promising information channels, where the multiplexing of pseudospin and/or valley degrees of freedom is unambiguously demonstrated in various devices including a multiport valve for acoustic power dividing and feeding. The information capacity in the input channel is substantially enhanced due to the creating of an extra dimension for the data carriers. The topological devices proposed here, when integrated with other state-of-the-art communication techniques, may suggest a significant step towards acoustic communication circuits with complex functionalities.

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Section: Discussionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Acoustic topological devices based on emulating and multiplexing of pseudospin and valley indices

Gao

Mei

2020

New J. Phys.

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“…Only those photons scattered in the forward direction have the capability of conveying and maintaining the fidelity of the beam structure, as well as actually reaching a detector [42]. Nonforward Rayleigh scattering of structured light therefore has important consequences in the field of free-space communications, particularly at low levels of intensity, where the optical OAM of structured beams is multiplexed to engender large quantities of information transfer [43][44][45].…”

Section: Applications Of the Kramers-heisenberg Dispersion Formulmentioning

confidence: 99%

Kramers-Heisenberg dispersion formula for scattering of twisted light

Forbes

Salam

2019

Phys. Rev. A

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An extremely active research topic of modern optics is studying how light can be engineered to possess forms of structure such as a twisting or a helical phase and the ensuing optical orbital angular momentum (OAM) and its interactions with matter. In such circumstances, the plane-wave description no longer suffices and both paraxial and nonparaxial solutions to the wave equation are desired. Within the framework of molecular QED theory, a general formulation is developed for the scattering of twisted light beams by molecular systems through the Kramers-Heisenberg dispersion formula and ensuing scattering cross section, which takes account of the effects of the phase and intensity structure of twisted light, revealing scattering effects not exhibited by unstructured, plane-wave light. The theory is applicable to linear scattering as well as to nonlinear optical effects for both chiral and nonchiral species, and explicit results are derived for Rayleigh and Raman scattering (including second-order contributions), Rayleigh and Raman optical activity, and their circular-vortex differential scattering analogs. These processes necessitate the inclusion of magnetic-dipole and electric-quadrupole coupling terms, as well as the usual leading electric-dipole interaction term. It is seen that the coupling of electric quadrupole moments to structured light affords a unique sensitivity to the phase properties of the beam, most importantly, its optical OAM, and its inclusion permits the contribution to the scattering cross section proportional to the square of the mixed electric dipole-quadrupole polarizability to be evaluated for which interesting features result. These include its discriminatory behavior arising from circularly polarized input radiation and its dependence on the topological charge, which can also serve to enhance scattering. Also presented are results for a contribution of identical order proportional to the pure electric-dipole and quadrupole polarizabilities.

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“…2,3 At the same time, most of previous research deduced that the scattering features of OAM are different from ordinary beams and can improve the communication efficiency in optical communication. [4][5][6][7][8] The Lorenz-Mie theory cannot calculate scattering in complex shapes, and the FDTD method can calculate particles of many shapes. However, the FDTD method subdivides grids with complex models difficultly and increases errors.…”

Section: Introductionmentioning

confidence: 99%

Meshless hybrid implicit‐explicit radial point interpolation method in scattering of dielectric particles by light beam with orbital angular momentum

Wang

Xie

2020

Micro & Optical Tech Letters

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This letter proposes a meshless hybrid implicit-explicit radial point interpolation method (HIE-RPIM) to simulate the scattering of the Laguerre-Gaussian beam with orbital angular momentum (OAM) by dielectric particles. The results are verified by comparison with the finitedifference time domain (FDTD) and the radial point interpolation method (RPIM) which shows that the HIE-RPIM agrees well with the FDTD, and the HIE-RPIM is about 4.9 times faster than the FDTD method and about 4.2 times faster than the RPIM. Moreover, the scattering angle of forward scattering intensity maximum is about 10 to 35 when the OAM modes are L = 1 and 2 and moves back by 5 to 15 from L = 1 to 2. The HIE-RPIM has potential to research the scattering properties of OAM beam. K E Y W O R D S hybrid implicit-explicit radial point interpolation method (HIE-RPIM), optical communication, orbital angular momentum (OAM), particles, scattering

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Optical orbital-angular-momentum-multiplexed data transmission under high scattering

Cited by 224 publications

References 55 publications

Acoustic topological devices based on emulating and multiplexing of pseudospin and valley indices

Acoustic topological devices based on emulating and multiplexing of pseudospin and valley indices

Kramers-Heisenberg dispersion formula for scattering of twisted light

Meshless hybrid implicit‐explicit radial point interpolation method in scattering of dielectric particles by light beam with orbital angular momentum

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