simulation in mode solution


#1

Hi,

I using a mode solution to simulate an AWGs example,but it can not propagate shown in filed profile monitor. Can you please help me to check the simulation file?

awg-mode.lms (558.2 KB)

Thanks,

QI


#2

Hi @qi.han.1
In Lumerical’s knowledge base you can find informations about star couplers and AWG. https://kb.lumerical.com/en/index.html?pic_passive_waveguide_couplers_awgs_and_star.html .
Also you can find an example. I see you file and i found out that something is going wrong with your star couplers. I think that your star couplers are not correctly designed. Look the Lumerical’s star coupler.

There are many differences between yours star coupler and Lumerical’s differences.

Best regards
Konstantinos


#3

Thank you very much for your reply. My design is just a simple example, and I can simulate in FDTD. Here is the E field profile,
But when i simulate it in mode solution, it shows the optics can not propagate in my structure. Here is the E filed profile calculated in mode solution.

Qi


#4

Hi @qi.han.1
I think that you have not design properly the star couplers. I would like to make it clear. Here you can see a star coupler .

And let’s remove some items from the star coupler to make it clear

I think you your design should be modified.