I have been reading different articles about EM wave modes, it is said that in TE waves the E_z is zero, similarly for TM H_z is zero, and TEM both E_z and H_z are zero. How about the E_x and E_y in TE wave? Someone said E_y is also zero and only E_x exists in TE......is this true? Is it possible that I overlooked some assumptions made? Or actually the fact is, for TE, both E_x and E_y are NON-zero; only E_z is zero? I know this is a simple question but I do hope to confirm it earlier and proceed with my study, thanks for your kind attention.