Opto-Electronic Engineering, Volume. 50, Issue 9, 230172-1(2023)

Polarization-multiplexed optical differentiation using topological metasurfaces

Rui Feng1, Yaokai Tian1, Yalong Liu1, Fangkui Sun1, Yongyin Cao1, and Weiqiang Ding1,2、*
Author Affiliations
  • 1Institute of Advanced Photonics, School of Physics, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
  • 2Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shanxi 030006, China
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    Optical analog computing avoids the photoelectric conversion in various application scenarios by directly modulating the optical input in the spatial domain. Therefore, it has become a research focus in many applications such as image processing. In this paper, a polarization-multiplexed optical analog computing metasurface structure based on the Green's function method is designed using topologal optimization. Under different linearly polarized light incidence, this topological metasurface can independently tailor the amplitude and phase of the transmitted light field. It achieves bright-field imaging and one-dimensional second-order differentiation operations in orthogonal polarization states, as well as a polarization- controlled differentiation direction for a multiplexed differential system. These polarization-multiplexed designs can play a vital role in more optical computing application scenarios.

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    Rui Feng, Yaokai Tian, Yalong Liu, Fangkui Sun, Yongyin Cao, Weiqiang Ding. Polarization-multiplexed optical differentiation using topological metasurfaces[J]. Opto-Electronic Engineering, 2023, 50(9): 230172-1

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    Paper Information

    Category: Article

    Received: Jul. 14, 2023

    Accepted: Oct. 13, 2023

    Published Online: Jan. 24, 2024

    The Author Email: Ding Weiqiang (丁卫强)

    DOI:10.12086/oee.2023.230172

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