Reconfigurable beam system for non-line-of-sight free-space optical communication

Cao, Zizheng; Zhang, Xuebing; Osnabrugge, Gerwin; Li, Juhao; Vellekoop, Ivo M.; Koonen, A.M.J.

doi:10.1038/s41377-019-0177-3

Cited by 95 publications

(46 citation statements)

References 33 publications

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“…There are two interesting points to explore in our follow-up research plan. 1) The intelligent reflective surface technology in reference [41] can transform LOS link into NLOS link, which may be combined with the research in this paper to produce new application. 2) As an effective signal to exploit the adjacent sub-channels instead of interference, this rotation angle MIMO architecture may be used to improve the mobility of devices.…”

Section: Discussionmentioning

confidence: 99%

High Data Transfer Rate Spatial Division Multiplexing for Short Range non-Line-of-Sight Ultraviolet Optical Transmission

Zuo

et al. 2021

IEEE Photonics J.

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To overcome the inherent bandwidth limitation of non-line-of-sight (NLOS) ultraviolet communication (UVC) channel, a novel space division multiplexing (SDM) framework based on non-coplanar rotation angle is established. The influence of SDM structure parameters on inter-channel interference (ICI) is studied to obtain the optimal antenna configuration. And a Gaussian approximate distribution (GAD) signal detection model is presented, which simplifies the calculation of the Bit error rate (BER) of the Photon multiplier tube (PMT) reception and is suitable for complex ICI analysis. Furthermore, a low ICI scheme based on the relationship between BER and the interference factor is proposed to increase the data transmission rate or reduce the alignment configuration. As a result, the maximum data rate increases to 34 Mbps, or the alignment demand decreases by 33.33% at most. Moreover, these analysis results and techniques can be applied to other NLOS scattering optical wireless communication systems.

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Section: Discussionmentioning

confidence: 99%

High Data Transfer Rate Spatial Division Multiplexing for Short Range non-Line-of-Sight Ultraviolet Optical Transmission

Zuo

et al. 2021

IEEE Photonics J.

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“…. (22) The second crucial step of this derivation is to find the location of I R,P , which can be done by exploiting the generalized Snell's law, (13) and (14), to identify the corresponding incident ray to the reflected ray RP via θ i R and φ i R as 4…”

Section: B Irradiance Derivationmentioning

confidence: 99%

“…Moreover, in [12], Valagiannopoulos et al added programmable directivity to the transmitter by covering it with a metasurface. In addition, in [13], Cao et al proposed a beam-shaping system at the transmitter to enable non-line of sight VLC using coherent optical transmitter array. In [14], Deng et al proposed and demonstrated a reconfigurable mirco-mirrors based beam-steering system for FSO inter-rack networks of data centers.…”

Section: Introductionmentioning

confidence: 99%

Visible Light Communications via Intelligent Reflecting Surfaces: Metasurfaces vs Mirror Arrays

Abdelhady

Salem

Amin

et al. 2021

IEEE Open J. Commun. Soc.

133

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We propose two types of intelligent reflecting systems based on programmable metasurfaces and mirrors to focus the incident optical power towards a visible light communication receiver. We derive the required phase gradients for the metasurface array reflector and the required orientations of each mirror in the mirrors array reflector to achieve power focusing. Based on which, we derive the irradiance expressions for the two systems in the detector plane to characterize their performance in terms of aiming and focusing capabilities. We show analytically that the number of reflecting elements along with the relative source-reflector dimensions determine the system power focusing capability. Moreover, we quantify analytically the received power gain compared with reflector-free systems. In addition, we introduce a new simple metric to assess the relative reflectors' performance for a given source, detector, reflector layout. Finally, we verify the analytical findings regarding absolute and relative reflectors' performance via numerical simulations.

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“…Hence, OWC can largely solve the shortage of radio spectrum resources. [3] Visible light communication (VLC) [4] and beamsteered infrared (IR) light communication (BS-ILC) [5,6] are the two main technical directions of OWC. VLC transports data over LED illumination systems and multiple users share the VLC capacity.…”

Section: Introductionmentioning

confidence: 99%

A 20‐Gbps Beam‐Steered Infrared Wireless Link Enabled by a Passively Field‐Programmable Metasurface

Huang

Lei

et al. 2020

Laser & Photonics Reviews

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Beam steering is one of the main challenges in energy-efficient and high-speed infrared light communication. To date, active beam-steering schemes based on a spatial light modulator (SLM) or micro-electrical mechanical system (MEMS) mirror, as well as the passive ones based on diffractive gratings, are demonstrated for infrared light communication. Here, for the first time to the authors' knowledge, an infrared beam is steered by 35 • on one side empowered by a passively field-programmable metasurface. By combining the centralized control of wavelength and polarization, a remote passive metasurface can steer the infrared beam in a remote access point. The proposed system has the scalability to support multiple beams, flexibility to steer the beam, high optical efficiency, simple and cheap devices on remote sides, and centralized control (low maintenance cost), while it avoids disadvantages such as grating loss, a small coverage area, and a bulky size. Based on the proposed beam-steering technology, a proof-of-concept experiment system with a data rate of 20 Gbps is also demonstrated.

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Reconfigurable beam system for non-line-of-sight free-space optical communication

Cited by 95 publications

References 33 publications

High Data Transfer Rate Spatial Division Multiplexing for Short Range non-Line-of-Sight Ultraviolet Optical Transmission

High Data Transfer Rate Spatial Division Multiplexing for Short Range non-Line-of-Sight Ultraviolet Optical Transmission

Visible Light Communications via Intelligent Reflecting Surfaces: Metasurfaces vs Mirror Arrays

A 20‐Gbps Beam‐Steered Infrared Wireless Link Enabled by a Passively Field‐Programmable Metasurface

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