本书使用时域有限差分（FDTD）模拟技术，详细介绍了在独立时变介质中对导电磁波（EM）传播的分析和计算电磁（CEM）处理。内容提供了广泛的文献综述，解释了时变介质（时间光子晶体）在新的奇异应用中的重要性，这些应用涉及丰富的电磁现象，如参数放大、频率转换、非互易增益、电磁能量积累、时间涂层和时间瞄准（波束形成）。本书从麦克斯韦方程组和边界条件出发，阐述了一维（1D）FDTD模拟范例。通过新的可视化工具彻底解释了硬/软源实现、完全匹配层（PML）、模拟参数（单元大小和时间步进）的选择等问题。这本书提供了严格的分析技术、几个FDTD模拟示例和可复制的源代码，以及新的可视化/后处理机制的独特组合。这本书的内容应该被证明对学生、研究学者、科学家和工程师有用，他们在应用电磁学领域工作，并致力于设计基于时变介质的尖端微波/光学设备。
FDTD Analysis of Guided Electromagnetic Wave Interaction with Time-Modulated Dielectric Medium
This book presents a detailed analytical and computational electromagnetic (CEM) treatment of guided electromagnetic (EM) wave propagation in independently time-varying dielectric medium, using the finite-difference time-domain (FDTD) simulation technique. The contents provide an extensive literature review, explaining the importance of time-varying media (temporal photonic crystals) in new exotic applications that involve rich EM phenomena such as parametric amplification, frequency conversion, non-reciprocal gain, electromagnetic energy accumulation, temporal coating and temporal aiming (beam-forming). A one-dimensional (1D) FDTD simulation paradigm is then formulated in this book, starting from Maxwell’s equations and boundary conditions. The issues of hard/soft source realizations, perfectly matched layers (PMLs), choice of simulation parameters (cell-size and time-stepping) are thoroughly explained through new visualization tools. This book provides a unique combination of rigorous analytical techniques, several FDTD simulation examples with reproducible source-codes, and new visualization/post-processing mechanisms. The contents of this book should prove to be useful for students, research scholars, scientists and engineers, working in the field of applied electromagnetics, and aiming to design cutting-edge microwave/optical devices based on time-varying medium.
OR
