Dear all,
I am simulating the dispersion diagram of a 1D PBG waveguide by using band solver tool in OptiFDTD. As the guided modes propagating in the waveguide can be classified as even or odd-like mode, I need get two dispersion plots which are odd & even band for the first mode; however, no matter how I change the set-up of input plane, I still could get only one plot, and it is hard to tell if it is even or odd band. A band diagram is attached in this email as a picture, could anybody please guide me how to get these two bands? Thank you very much!
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