摘要：By using a finite difference time domain （FDTD） method, the effects of a one-dimensional （1D） surface defect on designer surface plasmon polaritons （designer SPPs） supported by a 1D metallic grating in THz domain are investigated. When the size of the defect is in a special range which is not too large, the designer SPPs reflected and scattered by the defect are weak enough to be neglected. The defect only induces a disturbance in the energy distribution of the designer SPP supported by the whole defect grating. If the defect size exceeds the said range, the reflecting and scattering are dominant in the influences of the defect on designer SPPs. Our analysis opens opportunities to control and direct designer SPPs by introducing a 1D defect, especially in low frequency domain.

摘要：使用Ⅴ-Ⅰ传输矩阵法分析了相移量、相移点位置以及啁啾系数对啁啾相移光纤光栅透射谱特性的影响,并分析了在啁啾光纤光栅中同时引入多相移时生成的多陷波滤波器的波长间隔,发现其与以同样的位置引入单相移时陷波滤波器的波长偏离间隔基本一致。依据仿真分析结果,可以优化啁啾相移光栅相移数量、位置间隔、啁啾系数和相移量的参数选择,设计出实际需要的多波长滤波器。

摘要：稻宅,越后妻有,日本,2003我们设计了一个用钢格栅建造的建筑空间装置：它是一个取景框,也是一个有两把座椅的亭子,供外来的游客和本地的农民休息和观景。