Ngr. Broderick et al., SOLITON-SOLUTIONS IN ROWLAND GHOST GAPS, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 52(6), 1995, pp. 5788-5791
We present here a class of solitary wave solutions for nonlinear perio
dic Bragg gratings. The effect of periodic coefficients is to cause ad
ditional band gaps to open up. It is in these Rowland ghost gaps that
solitary waves have been found.