Tunable ultrafast nonlinear optofluidic coupler Marius Vieweg, Sebastian Pricking, Timo Gissibl, Yaroslav V. Kartashov, Lluis Torner and Harald Giessen EPJ Web of Conferences, 41 (2013) 12010 Published online: 13 March 2013 DOI: 10.1051/epjconf/20134112010