Observation of two-dimensional superlattice solitons

Abstract

We observe experimentally two-dimensional solitons in superlattices comprising alternating deep and shallow waveguides fabricated via the femtosecond laser direct writing technique. We find that the symmetry of linear diffraction patterns as well as soliton shapes and threshold powers largely differ for excitations centered on deep and shallow sites. Thus, bulk and surface solitons centered on deep waveguides require much lower powers than their counterparts on shallow sites.

arXiv comment13 pages, 4 figures, to appear in Optics Letters

References in corpus (7)

• Observation of two-dimensional surface solitons in anisotropic waveguide arrays
• Discrete gap solitons in modulated waveguide arrays
• Observation of discrete gap solitons in binary waveguide arrays
• Discrete surface solitons in semi-infinite binary waveguide arrays
• Observation of two-dimensional defect surface solitons
• Angular surface solitons in sectorial hexagonal arrays
• Gap solitons in Bragg gratings with a harmonic superlattice

Cited by in corpus (3)

• Multiplexing complex two-dimensional photonic superlattices
• Two-dimensional solitons at interfaces between binary superlattices and homogeneous lattices
• Surface solitons in trilete lattices