Johnson, S.G.S.G.JohnsonPovinelli, M.L.M.L.PovinelliBienstman, P.P.BienstmanSkorobogatiy, M.M.SkorobogatiySoljacic, M.M.SoljacicIbanescu, M.M.IbanescuLidorikis, E.E.LidorikisJoannopoulos, J.D.J.D.Joannopoulos2021-10-152021-10-152003https://imec-publications.be/handle/20.500.12860/7701Coupling, scattering, and perturbation theory: semi-analytical analyses of photonic-crystal waveguidesProceedings paper