Problem with Plasmonic Waveguide in CST

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i'm using CST Microwave studio 2013 , and want to simulate MIM/IMI Plasmonic Waveguide , when i'm trying to add second layer ,i can't ,so can anyone help ?
http://upload7.ir/images/46619222198743348708.png

MIM=metal insulator metal
Thanks in advance
or do u have any suggestion for simulation with other software?

Hi
I think we you caan make one waveguide with the conducter properties and then an other with the same geometry but properties of insulater and add them up will this not solve your problem? CST is a good tool for Microwve Structure Simulation but you can also use HFSS that also works. If this does not solve your issue let me know and explain what exactly is the issue

Hi , the problem is i have to simulate MIM/IMI waveguide with CST , but i don't know what should i do , because u should draw this scheme : http://upload7.ir/images/42291587174754263568.png
(for example : MIM= gold,Air,gold)
i prefer CST but if not possible , please help u draw it at HFSS.
REGARDS

i just drew these properties in CST , so for first waveguide, Dimension x=-25,25 / y= -5,5 / z=0,25 , material = Gold(palik) , second waveguide : x=-25,25 / y= -12.5,12.5 / z=0,10 , metal =Air , third waveguide : x=-25,25 / y= -12.5,12.5 / z=0,10 , material=Gold(palik) and for Excitation : choosed The Top face of first waveguide(port1) and the bottom of the third waveguide(port2) , F=0.01-0.03THZ , Boundary : http://upload7.ir/images/54923277764228850059.png
but i got these error( check picture please) : http://upload7.ir/images/47435174970583248439.png
Can simulate with these properties and sau what's the problem ?
(also i want all of my Dimentions were same , but structure couldn't put together)
http://upload7.ir/images/95296303196703551350.png
http://upload7.ir/images/37235545178486952434.png
Thanks in Advance
** i nees to simulate structure from this book :
PLASMONICS:FUNDAMENTALS AND APPLICATIONS (ISBN-10: 0387331506) , chapter 2 , Multilayer Systems

Hi
I will let you know the problem or i would let you know the solution tomorrow

i shall to obtain this chart : http://upload7.ir/images/09298738467533555881.png

Hi
I studied all the figures you have sent me I have few questions You are using frequency in THz so your dimensions must be in nanno metres have you checked them with skin depth formula. You have not mentioned the units so just calculate the skin depth and adjust the mttalic part and that suld be in nanno meter range as frequency is in THz rang

Hi , please download this document , i told what i did.
thanks
http://sme9572.dl.rapidpars.com/8355...5xzcqh/cst.rar

Hi
Ok I will check it in the evening as i need to go now for my french class. Gave your issue to my Collegue at CERN and will let you know what may be the issue cheers

Hi , thanks , i'm awaiting.

Hi
I studied your document thoroughly and I belive your stucture is good and rest the issue of simultion try to change the boundry conditons and excitations to check if it works I belive there is some issue in the way you are definign your boundry conditions and exciting the structure. Try few different conditons and hope that it would solve the issue as far as structure I belive it is fine

Thanks my friend , i will do it and will write here