• Laser & Optoelectronics Progress
  • Vol. 59, Issue 1, 0100001 (2022)
Liu Chao1, Guo Xiaowei1、2、*, Li Shaorong1, and Gao Yuan1
Author Affiliations
  • 1School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu , Sichuan 610054, China
  • 2Yangtze Delta Region Institute, University of Electronic Science and Technology of China, Huzhou , Zhejiang 313001, China
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    DOI: 10.3788/LOP202259.0100001 Cite this Article
    Chao Liu, Xiaowei Guo, Shaorong Li, Yuan Gao. Theory and Application of Edge States in Topological Photonic Crystals[J]. Laser & Optoelectronics Progress, 2022, 59(1): 0100001 Copy Citation Text show less

    Abstract

    In recent years, topological photonic crystals have attracted growing interest for their unique propagation characteristics. With the development of theoretical models in topological photonics, numerous novel applications have emerged. Topological edge states formed by topological photonic crystals can realize optical enhancement and unidirectional transmission in optoelectronic devices. Such optoelectronic devices can have distinct characteristics such as immunity to local defects and high transmission efficiency, offering enormous potential benefits to chip development, biosensor, military communication, and other applications. This study summarizes and analyzes a range of optical devices based on theoretical models of edge states formed by topological photonics in different dimensions: topological lasers, optical waveguides, unidirectional conduction devices, and optical modulators. The presented examples demonstrate the huge potential of topological photonic crystals in structural design and material selection. Finally, the current research progress of topological photonic crystals is clarified and the defects and optimization direction of topological photonic devices in the design process are evaluated and prospected.