title: Reciprocity theorem and perturbation theory for photonic crystal waveguides.
abstract: Starting from Maxwell's equations we derive a reciprocity theorem for photonic crystal waveguides. A set of strongly coupled discrete equations results, which can be applied to the simulation of perturbed photonic crystal waveguides. As an example we analytically study the influence of the dispersion of a two level system on the band structure of a photonic crystal waveguide. In particular, the formation of polariton gaps is discussed.
authors.affiliation: Fraunhofer Institut für Angewandte Optik und Feinmechanik, Schillerstrasse 1, D-07745 Jena, Germany.
authors.forename: D
authors.initials: D
authors.lastname: Michaelis
authors.forename: U
authors.initials: U
authors.lastname: Peschel
authors.forename: C
authors.initials: C
authors.lastname: Wächter
authors.forename: A
authors.initials: A
authors.lastname: Bräuer