Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Port Definition in "Plasmonic Wire Grating" Model of COMSOL
Posted 24 nov. 2013, 21:15 UTC−5 RF & Microwave Engineering, Modeling Tools & Definitions, Parameters, Variables, & Functions Version 4.3 1 Reply
Please login with a confirmed email address before reporting spam
In the solved model “Plasmonic Wire Grating” 6 Ports are defined for measuring different order of grating scattering.
I tried to remove Ports 3, 4, 5 and 6 just to measure T0 (abs(emw.S21)^2) and R0 (abs(emw.S11)^2) but to my surprise the answers for T0 and R0 changed!!!!
Any idea how it is possible?
Best Regards,
Maha
Hello Maha Hashemi
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.
Please login with a confirmed email address before reporting spam
Did you find the solution to your question?
BTW, I also have a question related to the Plasmonic wire grating. In COMSOL 4.3, for TM mode port 2 (page 20), it defines the Ex field to be the specular reflection of the refracted beam?
Ex = (-) cos(beta)*exp(-i*kbx*x) !!Notice that negative sign!!
Why? Port 2 is for transmission of the zero-order refraction. Why do I need to define it as its specular reflection?
Hope anyone can help. Many thanks~
Lu
Attachments: