The “Modal Index” view shows you the effective refractive index of the selected
propagation mode vs. the scan parameter. The default scan parameter is the
wavelength. You can change the scan parameter in the “Properties of Fundamental
Mode” dialog box or in the “Properties of Higher Order Modes” dialog box.

To access this view do one of the following steps:

StepAction
1Select the “Modal Index” tab in the “Views” window
2Select “Views/Modal Index” on the “View” menu

Optical Fiber - Modal Index view