How to import mode file from another calculation?

Dear all,
I met a problem about the source import.
Since my structure is very long, I need to divide the total device into several sections.
I need to use the output mode file of the first section to inject into the second section as the input source.
I don’t know how to save the mode file and then load in the second section.

Could you anyone help me to solve this problems? Thank you very much!

Hi, @baiyanfei !

Here is the information that will help you:

In case you have other questions when doing your simulation, ask them here.