how to plot transmission vs time?


I have a big problem, I want to draw transmission vs time so I use a monitor but it’s wrong.
the plot should be this:

but the monitor shows this:

I want the negative and positive part of E, together.


When you plot E from a monitor, the value of E that is plotted by default is the magnitude of the E-field. As a result, this is always positive. To see the swing of the electric field, you will need to plot the individual vector components. For example Ex, Ey, or Ez.


thank you so much