We predict multiband vector plasmonic lattice solitons (PLSs) in metal–dielectric waveguide arrays, in both focusing and defocusing nonlinearities. Such vector solitons consist of two components originating from different transmission bands. By simulating the full nonlinear Maxwell’s equations, we demonstrate the diffractionless propagation of vector PLSs and their discrete diffraction when only one component is present. Their subwavelength size characteristics and the influences of metallic losses are also studied.
© 2013 Optical Society of America
Original Manuscript: January 31, 2013
Revised Manuscript: March 5, 2013
Manuscript Accepted: March 8, 2013
Published: April 4, 2013
Yao Kou, Fangwei Ye, and Xianfeng Chen, "Multiband vector plasmonic lattice solitons," Opt. Lett. 38, 1271-1273 (2013)