This video is taken from the FDE Learning Track on Ansys Innovation Courses.
When the calculation is done, you can access the results under the FDE object, in the object
You can also find these results in the “Eigensolver Analysis” window.
The mode list shows the effective index of each mode, the loss and the polarization fractions.
Note you can see the definition of the polarization fraction by clicking on the title of the column.
The waveguide here supports 3 modes.
The third mode would be cut off if the waveguide wasn’t fully surrounded by glass.
The “Mode plot options” allow you to plot the material properties or the modal fields
and to select which component to plot.
You can zoom in and out of the plot, using the mouse buttons.
We will now run a frequency sweep.
The frequency sweep settings can be found in the “Frequency analysis” tab.
There you can set the wavelength range to 1.5um to 1.6um, the number of points to 10,
the number of test modes to 8.
Note some options such as “track selected mode”, “detailed dispersion calculation”
and “store mode profiles while tracking” need to be selected to export the resulting
data to INTERCONNECT.
To run the calculation, click “Frequency sweep”.
The results can be seen in the plot area.
In the “Frequency plot” tab, you can select the effective index, group index, dispersion,