Beam propagation in periodically-bent waveguides: quantum mechanical analogy, dynamic mode stabilization and radiation loss reduction

In this paper, we study theoretically the properties of beam propagation in a periodically-curved optical waveguide beyond the usual perturbative approach and show the existence of unusual and exotic effects, such as dynamic beam splitting, dynamic directional coupling, and reduction of radiation losses, similar to many phenomena encountered in the dynamics of a bound electron in an atom subjected to a super-intense and high-frequency laser field.