High-capacity millimetre-wave communications with orbital angular momentum multiplexing

By Yan Yan, Guodong Xie, Martin P. J. Lavery, Hao Huang, Nisar Ahmed, Changjing Bao, Yongxiong Ren, Yinwen Cao, Long Li, Zhe Zhao and 4 more. Nature Communications, 2014

1,182 citations recorded by the source corpus.

One property of electromagnetic waves that has been recently explored is the ability to multiplex multiple beams, such that each beam has a unique helical phase front. The amount of phase front ‘twisting’ indicates the orbital angular momentum state number, and beams with different orbital angular momentum are orthogonal. Such orbital angular momentum based multiplexing can potentially increase the system capacity and spectral efficiency of millimetre-wave wireless communication links with a single aperture pair by transmitting multiple coaxial data streams. Here we demonstrate a 32-Gbit s−1 millimetre-wave link over 2.5 metres with a spectral efficiency of ~16 bit s−1 Hz−1 using four independent orbital–angular momentum beams on each of two polarizations. All eight orbital angular momentum channels are recovered with bit-error rates below 3.8 × 10−3. In addition, we demonstrate a millimetre-wave orbital angular momentum mode demultiplexer to demultiplex four orbital angular momentum channels with crosstalk less than −12.5 dB and show an 8-Gbit s−1 link containing two orbital angular momentum beams on each of two polarizations. High speed data transmission using orbital angular momentum beams has been recently demonstrated. Here, Yan et al. demonstrate a 32 Gbit/s millimetre-wave communication link using eight coaxially propagating independent orbital angular momentum beams with four orbital angular momentum states on two orthogonal polarizations.

Subfields: Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/abf5fe4662236dcaabd1efa95856e3519deae7e3

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Citations in the corpus

Generating Dual-Polarized Vortex Beam by Detour Phase: From Phase Gradient Metasurfaces to Metagratings (2022, methodology): “The proposed phase gradient metasurface and MG can efficiently excite vortex beams, and the expected maximum communication link calculated based on the Rayleigh distance is about 5 m which is in accordance with the current shortrange communication applications [3], [51].”
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Photon Spin Hall Effect-Based Ultra-Thin Transmissive Metasurface for Efficient Generation of OAM Waves (2019, background): “One of the most promising applications of OAM waves is to utilize them in wireless communications for enhancing channel capacities [6]–[8].”
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