We demonstrate, both theoretically and experimentally, the existence of nonlocal gap solitons in two-dimensional periodic photonic structures with defocusing thermal nonlinearity. We employ liquid-infiltrated photonic crystal fibers and show how the system geometry can modify the effective response of a nonlocal medium and the properties of two-dimensional gap solitons.
© 2009 Optical Society of America
Original Manuscript: August 21, 2008
Revised Manuscript: November 27, 2008
Manuscript Accepted: November 30, 2008
Published: January 26, 2009
Per Dalgaard Rasmussen, Francis H. Bennet, Dragomir N. Neshev, Andrey A. Sukhorukov, Christian R. Rosberg, Wieslaw Krolikowski, Ole Bang, and Yuri S. Kivshar, "Observation of two-dimensional nonlocal gap solitons," Opt. Lett. 34, 295-297 (2009)