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Stability of multihump optical solitons

Ostrovskaya, Elena A. and Kivshar, Yuri S. and Skryabin, Dmitry V. and Firth, William J. (1999) Stability of multihump optical solitons. Physical Review Letters, 83 (2). 296 -299. ISSN 0031-9007

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We demonstrate that, in contrast with what was previously believed, multihump solitary waves can be stable. By means of linear stability analysis and numerical simulations, we investigate the stability of two- and three-hump solitary waves governed by incoherent beam interaction in a saturable medium, providing a theoretical background for the stability of the experimental results reported by Mitchell, Segev, and Christodoulides [Phys. Rev. Lett. 80, 4657 (1998)].