Demonstration of orbital angular momentum channel healing using a Fabry-P閞ot cavity

Wei, Shibiao; Wang, Dapeng; Lin, Jiao; Yuan, Xiaocong

doi:10.29026/oea.2018.180006

Cited by 14 publications

(12 citation statements)

References 29 publications

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“…Compared with previous OAM-demultiplexed systems 6–8,10,41 , our SMART has two differences. First, in traditional systems, OAM channels are physically projected onto different spatial locations for the purpose of discrimination.…”

Section: Discussionmentioning

confidence: 93%

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

et al. 2019

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Multiplexing multiple orbital angular momentum (OAM) channels enables high-capacity optical communication. However, optical scattering from ambient microparticles in the atmosphere or mode coupling in optical fibers significantly decreases the orthogonality between OAM channels for demultiplexing and eventually increases crosstalk in communication. Here, we propose a novel scattering-matrix-assisted retrieval technique (SMART) to demultiplex OAM channels from highly scattered optical fields and achieve an experimental crosstalk of –13.8 dB in the parallel sorting of 24 OAM channels after passing through a scattering medium. The SMART is implemented in a self-built data transmission system that employs a digital micromirror device to encode OAM channels and realize reference-free calibration simultaneously, thereby enabling a high tolerance to misalignment. We successfully demonstrate high-fidelity transmission of both gray and color images under scattering conditions at an error rate of <0.08%. This technique might open the door to high-performance optical communication in turbulent environments.

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Section: Discussionmentioning

confidence: 93%

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

et al. 2019

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“…Unlike the strict constraint conditions for polarization coupling in plasmon excitation, the phase of the excitation light is unconstrained and can be freely changed. In the excitation of SPPs, the phase information can be transferred into the plasmonic field, such as for an Airy plasmon beam with a cubic phase 156 and plasmonic vortexes with orbital angular momentum (OAM) [157][158][159] . Small objects in such plasmonic fields will be subjected to additional forces.…”

Section: Phase Regulationmentioning

confidence: 99%

Plasmonic tweezers: for nanoscale optical trapping and beyond

et al. 2021

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Optical tweezers and associated manipulation tools in the far field have had a major impact on scientific and engineering research by offering precise manipulation of small objects. More recently, the possibility of performing manipulation with surface plasmons has opened opportunities not feasible with conventional far-field optical methods. The use of surface plasmon techniques enables excitation of hotspots much smaller than the free-space wavelength; with this confinement, the plasmonic field facilitates trapping of various nanostructures and materials with higher precision. The successful manipulation of small particles has fostered numerous and expanding applications. In this paper, we review the principles of and developments in plasmonic tweezers techniques, including both nanostructure-assisted platforms and structureless systems. Construction methods and evaluation criteria of the techniques are presented, aiming to provide a guide for the design and optimization of the systems. The most common novel applications of plasmonic tweezers, namely, sorting and transport, sensing and imaging, and especially those in a biological context, are critically discussed. Finally, we consider the future of the development and new potential applications of this technique and discuss prospects for its impact on science.

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“…For a birefringent or deformed particle trapped in viscous fluid, rotation with certain frequency can be initiated by the counteracting between optical angular momentum induced torque and the resistive torques induced by the ambient 12 . As a result, the particle rotation control driven by optical angular momentum is often susceptible to various factors including the intensity of light 13 , the morphology of particle, and the viscosity coefficient of the ambient. Rotation speed calibration in angular momentum based optical tweezers therefore is usually required for precisely controlling the rotation speed 3,[14][15][16] .…”

Section: Introductionmentioning

confidence: 99%

Robust and high‐speed rotation control in optical tweezers by using polarization synthesis based on heterodyne interference

Liu

Dong

Yang

et al. 2020

OEA

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The rotation control of particles in optical tweezers is often subject to the spin or orbit angular momentum induced optical torque, which is susceptible to the mechanical and morphological properties of individual particle. Here we report on a robust and high-speed rotation control in optical tweezers by using a novel linear polarization synthesis based on optical heterodyne interference between two circularly polarized lights with opposite handedness. The synthesized linear polarization can be rotated in a hopping-free scheme at arbitrary speed determined electronically by the heterodyne frequency between two laser fields. The experimental demonstration of a trapped vaterite particle in water shows that the precisely controlled rotation frequency of 300 Hz can be achieved. The proposed method will find promising applications in optically driven micro-gears, fluidic pumps and rotational micro-rheology.

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Demonstration of orbital angular momentum channel healing using a Fabry-P閞ot cavity

Cited by 14 publications

References 29 publications

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

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

Plasmonic tweezers: for nanoscale optical trapping and beyond

Robust and high‐speed rotation control in optical tweezers by using polarization synthesis based on heterodyne interference

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