Opto-Electronic Engineering, Volume. 50, Issue 9, 230172-1(2023)
Polarization-multiplexed optical differentiation using topological metasurfaces
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.
Get Citation
Copy Citation Text
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
Category: Article
Received: Jul. 14, 2023
Accepted: Oct. 13, 2023
Published Online: Jan. 24, 2024
The Author Email: Ding Weiqiang (丁卫强)