Phase information in Distributed Bragg Reflector

[abuammarazmi]

Hello,
Is it possible to extract the phase information of the Distributed Bragg Reflector? If yes then what are changes to be made in your code to obtain the phase change. From the solver file I tried plotting the 'delta' instead of RTot or TTot but it seems that variable is empty and when I try to plot rTE (cause from what I understood, that actuallt contains the complex data i.e. phase information), then it shows an error that
"ComplexWarning: Casting complex values to real discards the imaginary part
return math.isfinite(val)"
Can someone help me with this information ?