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 The information provided may be out of date.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.

About defining a TE/TM mode incidental light in 3D waveguide structure

Please login with a confirmed email address before reporting spam

Hi, everyone.

Since we know we can use a 2D cross-section of waveguide to fine the effective refractive index. Incident light at the designed port can be difined as "Rectangle" with TE/TM mode.

Here I want to do the simulation in 3D model. The type of port is "numeric" while there is no definition for the mode.

After boundary model analysis I got the field distribution in the cross-section.
I wonder whether I can define a TE/TM light to simulate in 3D model.

Thank you so much.

4 Replies Last Post 9 ott 2015, 06:39 GMT-4

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 25 apr 2012, 12:27 GMT-4
You can use Port>User Defined to specify manually TE and TM modes
You can use Port>User Defined to specify manually TE and TM modes

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 29 apr 2012, 05:24 GMT-4
About defining a TE mode in 3D waveguide sturcture

Thank you so much for your guidance.

Now I will try to use "user defined " port.
However, if I want to use a 1W TE-polarized incidental light, what should I define on INPUT QUANTITY(like the initial value of electric fields and propogation constant?)

Thanks so much.
About defining a TE mode in 3D waveguide sturcture Thank you so much for your guidance. Now I will try to use "user defined " port. However, if I want to use a 1W TE-polarized incidental light, what should I define on INPUT QUANTITY(like the initial value of electric fields and propogation constant?) Thanks so much.

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago 30 apr 2012, 16:21 GMT-4
It's explained in "Plasmonic Wire Grating" example
It's explained in "Plasmonic Wire Grating" example

Please login with a confirmed email address before reporting spam

Posted: 9 years ago 9 ott 2015, 06:39 GMT-4
hey,
I'm having similar problems. I'm also trying to design a 3D waveguide model. Have you found the solution yet?
hey, I'm having similar problems. I'm also trying to design a 3D waveguide model. Have you found the solution yet?

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.