THIS M-FILE USES THE TRANFER MATRIX METHOD TO EVALUATE THE COUPLED-MODE
％EQUATIONS. THE REFLECTION SPECTRUM OF THE GRATING AND THE TRANSMISSION
％SPECTRUM, DELAY AND DISPERSION OF THE FABRY-PEROT FILTER ARE SIMULATED
Description: soft source, 1D,absorbing boundary condition (which really only work for epsrel=murel=1), reflection at an interface type ward_fdtd1d to run.
