We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Superheterodyne-inspired waveguide-integrated metasurfaces for flexible free-space light manipulation.
- Authors
Wu, Geng-Bo; Zhu, Shu-Yan; Pang, Stella W.; Chan, Chi Hou
- Abstract
Metasurfaces have attracted significant attention in recent years due to their unprecedented light-manipulation abilities. However, most metasurfaces so far have relied on external light excitation, prohibiting them from full on-chip integration. Inspired by the superheterodyne principle in radio communications, here we propose a new waveguide-integrated metasurface architecture capable of converting in-plane guided modes into any desired out-of-plane free-space modes. A theoretical model, verified by simulation and experiment, is developed to provide a deep understanding of the involved physical mechanism and facilitate innovative metasurface designs. The judicious design of baseband signals allows the silicon-based superheterodyne metasurfaces to achieve complex light manipulations, including arbitrary-direction beam deflection and focusing. The proposed superheterodyne metasurface is a marriage of radio communications and photonics. It provides a paradigm shift of metasurface designs and empowers integrated photonic devices with extraordinary free-space interactivity capability, enabling a broad spectrum of applications in communications, remoting sensing, and imaging.
- Subjects
MARITAL communication; RADIO (Medium); WAVEGUIDES; BASEBAND; PHOTONICS; DEFLECTION (Mechanics)
- Publication
Nanophotonics (21928606), 2022, Vol 11, Issue 20, p4499
- ISSN
2192-8606
- Publication type
Article
- DOI
10.1515/nanoph-2022-0352