In reply to 鹏 曹.

对应电场或磁场的设定，端口的内部参数变量会有所区别，但如果定义的E0和H0反映的都是同一个入射波，那么计算的结果是等效的。

In reply to Min Yuan.

请问入射端口设置E0或者H0本质上没区别吗？

In reply to Min Yuan.

明白了，谢谢！

In reply to Qing He.

您好，端口只能对特定模式进行吸收，因此这里设置与入射一致的模式端口进行吸收。

您好，请问一下，入射端口如果设置E0为(1,0,0),出射端口为什么也要设置E0为(1,0,0)，有什么特定的意义吗？

In reply to 泳棵 王.

Used to add excitation/absorption to the periodic element model, and when Periodic is selected, the Diffraction Order port subnode is available from the context menu, manual and automatic add Settings can refer to the model: //www.denkrieger.com/model/plasmonic-wire-grating-wave-optics-14705 、//www.denkrieger.com/model/hexagonal-grating-wave-optics-22331

What is the purpose of using periodic ports

您好，请问一下，入射端口如果设置E0为(1,0,0),出射端口为什么也要设置E0为(1,0,0)，有什么特定的意义吗？

Hi Zhimin ,

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Dear Walter Frei,
I am writing to you for your help. These days i have been simulating a 3-D model of a periodic structure with oblique incidenting circular polarized light. But I have encountered some problems that have been solved for a long time.
I want to define a circular polarized light with an Angle of theta between the k and z axes, and k is on the z-x plane. My settings are as follows：I choosed “periodic” in type of port and
I defined the polarization of circular polarized light at both input and output port : cos (theta) in x direction, a* i in y direction, and -sin(theta) in z direction. Then, i choosed “floquent periodicity” in x and y direction in periodic condition. And I choosed “from periodic port” in k-vector for floquent periodicity. However, the charge map derived from the calculation results is not continuous on the right and left side of the structure in x direction.
I don’t know if my periodic conditions are wrong. If wrong, how should I revise. Any reply from you will be greatly appreciated.
Sincerely yours,
Zhimin Jing