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Updated: Jan 27, 2026

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
Published on: June 7, 2019
Quasi-rhombus metasurfaces as multimode interference couplers for controlling the propagation of modes in
Abstract:
Metasurfaces can control the propagation of free space and guided modes by imparting a phase gradient and modifying the mode propagation properties. Here we propose a design to control optical signals in a dielectric-loaded waveguide using quasi-rhombus gradient plasmonic metasurface structure. The metasurface acts as a multimode interference coupler that can focus, route, and split the propagating field in UV-visible spectral range. The ability to gain full control on waveguided mode with minimal footprint can significantly impact miniaturization of optical devices and photonic integrated circuits.
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