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

Jianou Huang, Chao Li, Yu Lei, Ling Yang, Yuanjiang Xiang, Alberto G. Curto, Zilun Li, Lei Guo (Corresponding author), Zizheng Cao (Corresponding author), Yue Hao, A.M.J. (Ton) Koonen

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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.
Original languageEnglish
Article number2000266
Number of pages13
JournalLaser & Photonics reviews
Issue number1
Early online date16 Nov 2020
Publication statusPublished - Jan 2021


  • gap-surface plasmon metasurfaces
  • optical beam steering
  • optical wireless communication


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