Gap soliton gating, dissociation, and retrieval via defect mode   excitation in a resonant photonic crystal
  We consider the interaction within a bunch of two coherent optical pulses in a one dimensional, resonant photonic crystal which includes a defect produced by a coherent pump. Using numerical methods, the defect is shown to provide a selective reversible trap for a gap soliton mediated by the long-range coupling. This opens up new opportunities for signal transmission control and light localization. 
Igor V. Mel'nikov and J. Stewart Aitchison