From Volumetric to Planar Multiplexing: Phase‐Coded Metasurfaces without the Bragg Effect

From Volumetric to Planar Multiplexing: Phase‐Coded Metasurfaces without the Bragg Effect

Advanced Materials

10.1002/adma.202304386

http://dx.doi.org/10.1002/adma.202304386

Jia Chen, Dapeng Wang, Guangyuan Si, Rongxin Zhang, Yongsop Hwang, Xinjian Wang, Jiaxin Zheng, Mengzhe Shen, Qian Wang, Jiao Lin

18 July 2023

Chen, J., Wang, D., Si, G., Zhang, R., Hwang, Y., Wang, X., Zheng, J., Shen, M., Wang, Q., & Lin, J. (2023). From Volumetric to Planar Multiplexing: Phase‐Coded Metasurfaces without the Bragg Effect. Advanced Materials, 35(44). Portico. https://doi.org/10.1002/adma.202304386

AbstractMetasurfaces consisting of planar subwavelength structures with minimal thickness are appealing to emerging technologies such as integrated optics and photonic chips for their small footprint and compatibility with sophisticated planar nanofabrication techniques. However, reduced dimensionality due to the 2D nature of a metasurface poses challenges to the adaptation of a few useful methods that have found great success with conventional optics in 3D space. For instance, Bragg diffraction is the foundation of the well‐established technique of phase‐coded multiplexing in volume holography. It relies on interference among the scattered waves from multiple layers across the thickness of a sample. In this work, despite losing the dimension in thickness, a metasurface is devised to experimentally demonstrate phase‐coded multiplexing by replacing free‐space light with a surface wave in its output. The in‐plane interference along the propagation of the surface wave resembles the Bragg diffraction, thus enabling phase‐coded multiplexing in the 2D design. An example of code‐based all‐optical routing is also achieved by using a multiplexed metasurface, which can find applications in photonic data processing and communications.

Publisher Copyright

This research / project is supported by the A*STAR - AME Individual Research Grants (IRG)
Grant Reference no. : A20E5c0095

This research / project is supported by the A*STAR - Central Research Fund
Grant Reference no. : C210112044

This work is supported by the Science and Technology Projects of Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM) No. HRTP202231.

This is the peer reviewed version of the following article: Chen, J., Wang, D., Si, G., Zhang, R., Hwang, Y., Wang, X., Zheng, J., Shen, M., Wang, Q., & Lin, J. (2023). From Volumetric to Planar Multiplexing: Phase‐Coded Metasurfaces without the Bragg Effect. Advanced Materials, 35(44). Portico. https://doi.org/10.1002/adma.202304386 , which has been published in final form at doi.org/10.1002/adma.202304386. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.

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