After reading some papers on photonic organic modulators, I started evaluation of COMSOL to optimize the overlap of the RF electrical field and the optical field of the travelling wave.
The layout of the modulator is a strip load slot waveguide. I already optimized the optical field with FEM and BPM software tools, but unfortunately I cannot import the CADs on COMSOL, so I need to design the structure again. Not a big deal, but COMSOL has so many models, applications and tools that I do not know which using to start with. Can you help me suggesting a good way to start.
I need to design a slot waveguide maximizing the overlap of the optical field of the wave travelling within the slot (FEM) with the RF electrical field applied between the corse of the slot waveguide.
Dear Stefano,
I would like to help you, but I am not using COMSOL..
If you can send me the sketch of your structure, I will try
to do my best.
Sincerely yours,
Hovik
I really thank you Hovik.
The difficulty for me is starting with COMSOL. It's something like when you are told to buy something in the supermarket and when you go you find thousands of products apparently to be exactly the same and do not know which taking.
I will send it to your email address. I really thank you again.
Dear Stefano,
First, the transfer the CAD model to Comsol depends of the version of Comsol which you have.
Second, you can select your model to simulate via the RF electrical field or Wave Optics Module.
Regards,
Hamidreza
Stefano, why not ask COMSOL support? They have specialists for everything.
@Kimmo: I did, but the problem is I'm in Japan and Japanese support does not manage English speaking/writing. Anyway I contacted them and waiting for reply.
Stefano, COMSOL has excellent international technical support. Just mail [email protected] and state your problem clearly.
yes, I guess i'll follow your suggestion to go directly with US people.
Dear Stefano, it seems that you want to calculate the eigen modes of a slot waveguide and then input the eigen mode to the waveguide. I think COMSOL have examples to show the eigen mode calculation and optimization process.
Not exactly eigen-modes, at least not related to the optical field. Anyway following suggestion from Kimmo to go directly with US support of COMSOL, I received the reply in less than 24 hours, really good from them and full of very useful explanations.
Thanks everybody for the help
- Badges
- Science topic