We theoretically and experimentally study the nonlinear propagation of polychromatic light in curved waveguide arrays. We show that at moderate light powers the nonlinear self-action breaks the left–right symmetry of the polychromatic beam, resulting in the separation of different spectral components owing to the wavelength-dependent spatial shift. At high light powers a diffraction-managed polychromatic soliton is formed. These results demonstrate new possibilities for tunable demultiplexing and spatial filtering of supercontinuum light.
© 2010 Optical Society of America
Original Manuscript: January 14, 2010
Revised Manuscript: March 9, 2010
Manuscript Accepted: March 11, 2010
Published: April 23, 2010
Xinyuan Qi, Ivan L. Garanovich, Andrey A. Sukhorukov, Wieslaw Krolikowski, Arnan Mitchell, Guoquan Zhang, Dragomir N. Neshev, and Yuri S. Kivshar, "Polychromatic solitons and symmetry breaking in curved waveguide arrays," Opt. Lett. 35, 1371-1373 (2010)