Reply To: Information regarding the measurement of Phase spectrum in FDTD

[Guilin Sun]

The time dependent refractive index can be found here  https://optics.ansys.com/hc/en-us/articles/360034394734-Advanced-and-custom-optical-material-models-in-FDTD-and-MODE

Since plugin material is advanced feature, we provide very limited technical support.

However, since it changed with time, you will need to use time monitor and complex source field:

to get real and imaginery parts of the fields in order to get phase information. Frequency-domain monitor can only give steady-state CW phase.