We consider two-component solitons in a medium with a periodic modulation of the nonlinear coefficient. The modulation enables the existence of complex multihump vector states. In particular, vector solitons composed of dipole and fundamental or dipole and even double-hump components exist and may be stable. Families of unstable scalar solitons can be stabilized in the vectorial form, due to the coupling to a stable second component.
© 2009 Optical Society of America
Original Manuscript: September 21, 2009
Revised Manuscript: October 16, 2009
Manuscript Accepted: October 20, 2009
Published: November 19, 2009
Yaroslav V. Kartashov, Boris A. Malomed, Victor A. Vysloukh, and Lluis Torner, "Vector solitons in nonlinear lattices," Opt. Lett. 34, 3625-3627 (2009)