Hello,
Two main things:
In your .dat file the digits are separated by commas, when they should be separated by decimal points. That’s the convention our text documents take.
Also I tried with the fiber component you had placed but the parameters you changed do not seem to give a working component. If I place a new default component and use the text file you submitted it works fine. Do you have a reference for the parameters you set? The background loss was noticeably high as well at 30 dB/km.
Cheers!