Change the Polarization to SemiVector TE.

In the Simulation Parameters dialog box, Global Data tab, edit the Wavelength from 1.30 to 1.65, and then re-calculate the modal indices.

Compare the results to the modal indices generated with the Finite Difference Method of OptiFiber shown in Table 11.

BPM - Table 11 Comparison of Modal Indices for SMF-28: OptiBPM vs OptiFiber

Table 11: Comparison of Modal Indices for SMF-28: OptiBPM vs OptiFiber

These results agree well.