层状Bragg结构中的超光速隧穿与负群延迟

Proceedings of XIth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic Acoustic Wave Theory Pub Date : 2006-10-01 DOI:10.1109/DIPED.2006.314291

V. Borulko

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引用次数: 10

摘要

研究了具有周期性畸变的布拉格结构。从理论上研究了宽频段下的波散射效应。利用特征矩阵和傅立叶波分解的方法获得了反射波和透射波脉冲的频率和时间依赖关系。分析了散射场的大小和相位。在具有不同类型畸变的Bragg结构中，观察到群延迟的反常行为(超光速和负光速)

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Superluminal Tunneling and Negative Group Delay in Layered Bragg Structures

Bragg structures with distortion of periodicity are considered. Effects of wave scattering are theoretically investigated in wide frequency band. Methods of characteristic matrices and Fourier wave decomposition are used for obtaining frequency and time dependencies of reflected and transmitted wave pulses. Magnitudes and phases of scattered fields are analyzed. Phenomena of anomalous behavior of group delay (superluminal and negative ones) are observed for Bragg structures with different type of distortions

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Proceedings of XIth International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic Acoustic Wave Theory

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