High order methods to simulate scattering problems in locally perturbed
periodic waveguides
High order methods to simulate scattering problems in locally perturbed
periodic waveguides
In this paper, two high order numerical methods, the CCI method and the decomposition method, are propose to simulate wave propagation in locally perturbed periodic closed waveguides. As is well known the problem is not always uniquely solvable due to the existence of guided modes, the limiting absorption principle is …