| 引用本文格式: Zhou Zhi-Peng,Ye Fu-QIU,Zhang Guang-Cheng,Sun Wu,Zhang Di-Sheng. Optical period control and dynamics of non-Hermitian PT symmetric optical waveguide systems [J]. J. At. Mol. Phys., 2026, 43: 055001 (in Chinese) [周志鹏,叶伏秋,张光成,孙武,张迪生. 非厄米PT对称光波导体系的光学周期调控及动力学 [J]. 原子与分子物理学报, 2026, 43(5): 055001] |
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| 非厄米PT对称光波导体系的光学周期调控及动力学 |
| Optical period control and dynamics of non-Hermitian PT symmetric optical waveguide systems |
| 摘要点击 414 全文点击 5 投稿时间：2025-05-13 修订日期：2025-06-03 |
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| DOI编号
10.19855/j.1000-0364.2026.055001 |
| 中文关键词
PT对称 光学波导 光学周期 |
| 英文关键词
PT symmetry optical waveguides optical period |
| 基金项目
国家自然科学基金 |
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| 中文摘要
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| 光学波导系统满足宇称-时间(Parity-Time PT)对称性通常需要保持增益与耗散参数平衡条件，系统中耦合参数主要可通过调整耦合区域的波导间距来实现. 本文以多通道光学波导系统为模型，在系统处于PT对称状态下结合解析与数值求解方法进行动力学模拟，讨论调控耦合强度对系统光学周期影响的规律. 研究表明，通过调制系统耦合强度的方式能够有效调窄系统光学周期、缩短隧穿响应时间，且操作更为简便。这一方法无需依赖PT对称系统中异常点(EPS)对脉冲宽度的调控，而是通过调整耦合参数直接优化系统性能. 理论上这一发现可以为实现更短激光脉冲宽度提供理论基础. |
| 英文摘要
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| Optical waveguide systems that satisfy Parity-Time (PT) symmetry typically require a balance between gain and dissipation parameters, and the coupling parameters in the system can mainly be achieved by adjusting the spacing between waveguides in the coupling region. This paper uses a multi-channel optical waveguide system as a model to perform dynamic simulations with analytical and numerical methods under the condition of the system being in a PT symmetric state, discussing the regulations of controlling the coupling strength on the optical periodicity of the system. The study shows that modulating the coupling strength of the system can effectively narrow the optical period and shorten the tunneling response time, and the operation is simpler. This method does not rely on the control of the pulse width by the exceptional points (EPS) in PT symmetric systems, but optimizes system performance directly by adjusting the coupling parameters. Theoretically, this finding can provide a theoretical basis for achieving shorter laser pulse widths. |
