Transformation optics simulation method for stimulated Brillouin   scattering
  We develop a novel approach to enable the full-wave simulation of stimulated Brillouin scattering and related phenomena in a frequency-domain, finite-element environment. The method uses transformation optics techniques to implement a time-harmonic coordinate transform that reconciles the different frames of reference used by electromagnetic and mechanical finite-element solvers. We show how this strategy can be successfully applied to bulk and guided systems, comparing the results with the predictions of established theory. 
Roberto Zecca, Patrick T. Bowen, David R. Smith, St\'ephane Larouche
physics.optics