PIER | PIER Journals

2023-03-23

PIER

Vol. 177, 21-32, 2023

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Highly Sensitive Temperature Sensing via Photonic Spin Hall Effect

Shuaijie Yuan Jin Yang Yong Wang Yu Chen Xinxing Zhou

In this work, we propose a highly sensitive temperature sensor based on photonic spin Hall effect (PSHE). We find that, by involving the liquid crystal (LC) material, the spin spatial and angular shifts in PSHE are very sensitive to the tiny perturbation of temperature when the incident angle of light beam is near the Brewster and critical angles. Importantly, the phase transition from liquid crystal state to liquid state across the clearing point (CP) will lead to the transition of strong spin-orbit interaction to the weak one. During this process, we reveal that the sensitivity of our designed temperature sensor can reach a giant value with 8.27 cm/K which is one order of magnitude improvement compared with the previous Goos-Hänchen effect-based temperature sensor. This work provides an effective method for precisely determining the position of CP and actively manipulating the spin-orbit interaction.

Highly Sensitive Temperature Sensing via Photonic Spin Hall Effect

2023-02-13

PIER

Vol. 177, 1-20, 2023

doi:10.2528/PIER22101202

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Topological Edge Modes in One-Dimensional Photonic Artificial Structures (Invited)

Jiajun Zheng Zhiwei Guo Yong Sun Haitao Jiang Yunhui Li Hong Chen

In recent years, topological states in photonic artificial structures have attracted great attention due to their robustness against certain disorders and perturbations. To readily understand the underlying principles, topological edge modes in one-dimensional (1D) system have been widely investigated, which bring aboutthe discovery of novel optical phenomena and devices. In this article, we review our recent advances in topological edge modes. We introduce the connection between topological orders and effective electromagnetic parameters of photonic artificial structures in band gaps, discuss experimental demonstration of robust topological modes and their potential applications in wireless power transfer, sensing and field of optics, and give a brief introduction of future opportunities in 1D topological photonics.