Mode 2 of Disk Mesh with Electric Field Y component shown in color. Electric Field vectors and Transparency turned on. This can be compared with the disk waveguide image given on page 113, Figure 4.11 of Finite Element Method for Electromagnetics by John Volakis.

Mode 3 of rectangle Mesh with Electric Field vectors. This can be compared with the square waveguide image given on page 112, Figure 4.9 of Finite Element Method for Electromagnetics by John Volakis.

Mode 4 of rectangle Mesh with Electric Field vectors.