Demonstration of M-ary Encoding/Decoding Using Visible-Light Bessel Beams Carrying Orbital Angular Momentum (OAM) For Free-Space Obstruction-Free Optical Communications

Du, Jing; Li, Shuihui; Zhao, Yifan; Xu, Zhidan; Zhu, Long; Zhou, Peng; Li, Jun; Wang, Jian

doi:10.1364/ofc.2015.m2f.4

Cited by 6 publications

(3 citation statements)

References 11 publications

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“…Another example of image-based is presented in [19] that employs the amplitude and the phase of an optical field into a phase-only hologram to control spatial transverse modes for data-symbol mapping. A similar study can be found in [24] that uses OAM array for free-space communication link encoding/decoding with 625 states. A proposal for OAM light encoding in magnets has also been developed in [25], where the possible sub-wavelength magnetic phenomena induced by a vortex beam and their applications in the generation of topological defects in chiral magnets is discussed.…”

Section: Of 12supporting

confidence: 68%

Optical Encoding Model based on Orbital Angular Momentum powered by Machine Learning

Lamilla¹,

Sacarelo²,

Alvarez-Alvarado³

et al. 2023

Preprint

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Based on orbital angular momentum (OAM) properties of Laguerre Gaussian beams LG(p,ℓ), a robust optical encoding model for efficient data transmission applications is designed. This paper presents an optical encoding model based on intensity profile generated by a coherent superposition of two OAM-carrying Laguerre-Gaussian modes and Machine-learning detection method. In the encoding process, the intensity profile for data encoding is generated based on selection of p and ℓ indices, while the decoding process is performed using support vector machine (SVM) algorithm. Two different decoding models based on SVM algorithm are tested to verify the robustness of optical encoding model, finding a BER =10−9 for 10.2dB of signal-to-noise ratio in one of the SVM models.

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Section: Of 12supporting

confidence: 68%

Optical Encoding Model based on Orbital Angular Momentum powered by Machine Learning

Lamilla¹,

Sacarelo²,

Alvarez-Alvarado³

et al. 2023

Preprint

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“…All these beams are based on solutions of Helmholtz wave equation in different coordinates systems, respectively. Due to its intrinsic nature, the non-diffraction beams have many applications e.g., micro particles manipulating, optical tweezer [6,7], nonlinear optics [8,9], and communications [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Experimental Generation of Quasi-Zero-Order Mathieu-Gauss Beams via Diffractive Elements in THz Domain

et al. 2021

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We first demonstrate the Terahertz quasi-zero-order Mathieu-Gaussian beams with a 0.1-THz continuous wave. To generate these beams, two diffractive elements, a cylindrical lens and an axicon bearing specific phases are fabricated via 3D printing technology. The related numerical simulations are conducted to study intensity distributions and properties on non-diffraction and self-healing of THz quasi-zero-order Mathieu beams in free space. Experimental results are in good agreement with numerical ones. Based on the characteristic of terahertz Mathieu beams, they can be applied to terahertz linear array imaging system and terahertz communication.

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“…By adjusting the number of topological charges, phase coding4 can be constructed, and can directly increase the capacity of the channel. Furthermore, OAM beam has also been widely used in a variety of applications, including microparticles control56, optical communication5789101112, quantum communication13, digital spiral imaging14, optical data storage15, and biophysics16.…”

mentioning

confidence: 99%

Three-Dimensional Simultaneous Arbitrary-Way Orbital Angular Momentum Generator Based on Transformation Optics

Zhang

Deng

Hong

et al. 2016

Sci Rep

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In wireless communications, people utilize the technology of diversity against multipath fading, so as to improve the reliability of communication equipment. One of the long-standing problems in diversity antennas is the limited number of diversity in a certain space. In this paper, we provide a solution to this issue by a three-dimensional (3D) simultaneous arbitrary-way orbital angular momentum (OAM) generator (3D SAWOG) based on transformation optics. The proposed 3D SAWOG consists of a metamaterial block and a group of transformation cylinders, by which arbitrary-way planar wavefronts can be converted to helical wavefronts with various topological charges simultaneously. The 2D four-way OAM generator and the 3D SAWOG are analyzed, designed, and simulated. The simulation results validate the performance of a 3D SAWOG successfully, indicating that the proposed model possess a high mode purity and expansibility. The SAWOG can be used as a novel diversity antenna array due to the orthogonal property among different modes, which could provide more degrees of freedom than traditional dual-polarization antennas, further improving the reliability of the communication systems.

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Demonstration of M-ary Encoding/Decoding Using Visible-Light Bessel Beams Carrying Orbital Angular Momentum (OAM) For Free-Space Obstruction-Free Optical Communications

Cited by 6 publications

References 11 publications

Optical Encoding Model based on Orbital Angular Momentum powered by Machine Learning

Optical Encoding Model based on Orbital Angular Momentum powered by Machine Learning

Experimental Generation of Quasi-Zero-Order Mathieu-Gauss Beams via Diffractive Elements in THz Domain

Three-Dimensional Simultaneous Arbitrary-Way Orbital Angular Momentum Generator Based on Transformation Optics

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