Band structure and reflectance for a nonlinear one-dimensional photonic   crystal
  We consider a model for a one-dimensional photonic crystal formed by a succession of Kerr-type equidistant spaceless interfaces immersed in a linear medium. We calculate the band structure and reflectance of this structure as a function of the incident wave intensity, and find two main behaviors: the appearance of prohibited bands, and the separation and narrowing of these bands. A system with these features is obtained by alternating very thin slabs of a soft matter material with thicker solid films, which can be used to design a device to control light propagation for specific wavelength intervals and light intensities. 
Sergio Guti\'errez-L\'opez, Arnulfo Castellanos-Moreno, Adalberto   Corella-Madue\~no, Rodrigo Rosas-Burgos and Juan Adrian ...
physics.optics