基于等离子体表面激元(SPP)的MIM结构波导的光源选择,可以直接使用模式光源中的基础TM模光源来激发吗?

mode
fdtd

#1

plasmonic waveguide filter.fsp (308.8 KB)
Tunable band-pass plasmonic waveguide filters with nanodisk resonators.pdf (776.2 KB)
1,使用FDTD Solutions仿真基于SPP的MIM结构波导滤波器,因为SPP是由TM偏振激发,而且是在波导结构中,文献中的结构由谐振腔与波导组合构成,参考微环谐振器的范例,那么是否可以使用模式光源中的基础TM模式光源来激发?
2,所有边界都使用PML边界条件,工程文件中的计算区域如何设置才合适?
3,在文献中未涉及在Z轴方向上的尺寸问题,那么在仿真时结构在该方向上尺寸上如何设置才最合适?以及,是否使用MODE Solutions的VarFDTD进行2.5D计算更合适?
4,如果可以,能否烦请提供一个优化好得出结果与文献中类似的源文件呢?感谢!
万分感谢大家的回复!


基于表面等离激元的MIM结构仿真
基于表面等离激元的MIM结构
MIM structure
#2

Hi,
You can use fdtd solutions for reproduce paper result.
comments:
1-you should modify material properties according paper.
2-simulation region is 2-D from paper.
3-you should use mesh override in your simulation.
4-for stability I used stabilized pml.
simulation file:plasmonic waveguide filter_Mod.fsp (291.1 KB)


#3

Sincerely thanks for your help and it solves my problems perfectly!


#4

Thanks again. And I have another questions to bother you.
1,Why chose the Anti-Symmertric boundary condition but not the metal bc to be the y min boundary codition?
2, if I change it to the metal boundary condition, the results is diverging. How to fix diverging simulations? I tried the ways discussed in the page https://kb.lumerical.com/en/index.html?layout_analysis_diverging_simulations.html, and failed.
Thanks a lot for your help!


#5

Hi,
1-for decrease memory and time I used Anti-sym boundary.
2-You can change pml parameter for converging.please read this page carefully.
https://kb.lumerical.com/en/index.html?layout_analysis_diverging_simulations.html