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Abstract
In this paper, a periodic superconducting structure (PSS) with a multiwindow spin Hall effect (SHE) is proposed. Through using the multipeak and angle-sensitive characteristics of the evanescent wave, transmission defects at different angles are achieved for $p$ waves and $s$ waves. Based on this, the multiwindow SHE can be obtained by controlling the number of transmission peaks. Both the horizontal and vertical components possess a considerable displacement. The number of the window is inversely proportional to the value of displacement. The effects of temperature and ordinary dielectric on the two displacements are also discussed. The calculated results show that the temperature has little impact. While the refractive index of ordinary dielectric increases from 1.924 to 2.124, the positions of the two displacements quickly grow from 0° to 80°. Besides, a linear range can be found, and the optimal sensitivity can reach over ${253.9}^\circ \cdot {{\rm{RIU}}^{- 1}}$, which is suitable for detecting tiny changes in the refractive index. Our investigation provides theoretical guidance for obtaining the multiwindow SHE and a refractive index sensor with high precision.
© 2021 Optical Society of America
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