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arXiv · 2208.03825

Integrated Metasurface-based Wavelengths Division Demultiplexers

Amged Alquliah·Mohamed ElKabbash·JinLuo Cheng·Wei Li·Chunlei Guo
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Abstract

We present a design approach for realizing on-chip wavelength division demultiplexing (WDD) schemes by integrating all-dielectric metasurfaces of TiO2 nanorod arrays into a SiN waveguide. The designed metasurface locally modifies the effective refractive index of the SiN waveguide, creating an effective WDD that selectively passes a certain band of wavelengths into a specific output port. A set of representative 2-channel and 3-channel WDDs schemes were demonstrated for input TE00/TM00 modes and operating in different bands, showing the flexibility of our design approach. The proposed WDD schemes are compatible with visible to infrared wavelengths, photolithography-based fabrication, high efficiency with maximum transmission of 91%, and a small footprint at a few microns. Our design method paves the way for realizing several on-chip integrated devices for applications in optical data processing and biological sensing.

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Amged Alquliah, Mohamed ElKabbash, JinLuo Cheng, Wei Li, Chunlei Guo. 2022-08-07. Integrated Metasurface-based Wavelengths Division Demultiplexers. https://arxiv.org/abs/2208.03825

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