平面波（TM，TE）问题

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请问在算三维的时候，tm，te波设置是怎么一回事阿?
没发现哪个选项阿！清大家指点阿

EDITFEKO ... AW Card
CADFEKO ... WavePort
有文章請去查一下
平面波....
A0 card
This card realises excitation by a linearly polarised incident plane wave.
Polarisation: This group sets the behaviour of the polarisation vector. If either of the rotating options is selected, the Ellipticity must be specified below.