Learning Forum

[ferruccio.pisanello]

Hi,

I want to import a mode profile in an FDTD simulation using an import source. I calculated the mode by FDE and exported the mode data as *.MAT file. But import source gives an error saying the MATLAB file doesn't contain a directory field. Can anyone help with this, please?

Thanks

[Guilin Sun]

Not sure how can you import mode source in FDTD port, as it does NOT allow users to import source. There is a reason for this: port has mode source, frequency-domain power monitor and mode expansion monitor.
Since your import source is from FDE, and mode source also uses FDE, there is no need to import source, in most cases.
In case you really want to import the mode source due to some special reason, you will need to use import source, and refer this example: Using an equation to define the spatial field profile of a source in FDTD
you have E and H fields, so to have better accuracy, please have the dataset with both E and H fields.

[ferruccio.pisanello]

Hi,
Thanks for the reply. I wanted to import the MODE field data into the source in FDTD. I could use the script in the example to do that. Thanks!