mode expansion cannot calculate results

- May 22, 2025 at 12:49 pm
  
  liuyingyi
  Subscriber
  
  Two monitors were set up in the simulation model. The monitor "T" monitors the full-band transmittance, and the monitor "T_1550" monitors the transmittance at 1550nm. Now overlap the “mode expansion” with T_1550 and point to T_1550, set the "frequency points" to the same 1 as T_1550. The calculate results is normal after run. However, if the mode expansion coincides with T and points to T, set the "frequency points" to the same 200 as T, and then check the “expansion for... “of the mode expansion after running, the following error will be reported after the calculation result. May I ask how to solve it?
- May 23, 2025 at 4:59 pm
  
  Amrita Pati
  Ansys Employee
  
  Hi,
  Let me explain what I have understood. Please feel free to correct me if I am mistaken. The mode expansion monitor points to T and T_1550. The number of frequency points for T is 200 and for T_1550 is 1. Mode expansion for T_1550 (for 1 frequency point) is working properly. But when you increase the number of points of mode expansion monitor to 200, you get this error.
  Let me test this on my end and come back.
  Regards,
  Amrita
- May 23, 2025 at 5:46 pm
  
  Amrita Pati
  Ansys Employee
  
  Hi,
  I am unable to reproduce the issue I explained. Please let me know if I am mistaken.
  Regards,
  Amrita