simple Electromagnetic question...

Hi,

this is a simple basic question. Can someone please tell me what the TE and TM mode are? I mean in simple terms what Transverse Electric and Transverse Magnetic are?

Regards

TE modes (Transverse Electric) no electric field in the direction of propagation.
TM modes (Transverse Magnetic) no magnetic field in the direction of propagation.
TEM modes (Transverse ElectroMagnetic) neither electric nor magnetic field in the direction of propagation.