| Cite this article as: Sun Wu,Ye Fu-Qiu,Zhang Guang-Cheng. Regulation and dynamics of non-Hermitian PT symmetric multi-channel optical waveguide system [J]. J. At. Mol. Phys.(原子与分子物理学报), 2025, 42: 015001 (in Chinese) |
| Regulation and dynamics of non-Hermitian PT symmetric multi-channel optical waveguide system |
| Hits 331 Download times 82 Received:April 11, 2023 Revised:April 24, 2023 |
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| DOI
10.19855/j.1000-0364.2025.015001 |
| Key Words
PT symmetry,non-hermite,three-channel waveguide |
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| Abstract
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| The regulation of PT symmetry in the PT (Parity-Time) symmetric optical waveguide system is mainly realized by the periodic change of complex refractive index materials. In this paper, we give a configuration of manipulating the PT symmetry for the neutral waveguide with additional periodic modulation in the coupled dual-channel waveguide system. After the system is converted into an equivalent unmodulated system with renormalization parameters by high-frequency approximation, it is found that the PT symmetry of the system can be regulated by introducing an additional single-frequency periodic modulation optical waveguide, and the energy spectrum characteristics of the system with periodic modulation of non-Hermitian three-channel waveguide are discussed, Finally, the dynamic evolution of light in non-Hermitian three-channel optical waveguide is given by analytical and numerical methods. |
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