title: Tunable ultrafast nonlinear optofluidic coupler.
abstract: We present an optofluidic nonlinear coupler fabricated by selective filling of two strands of a photonic crystal fiber with the liquid CCl4 which exhibits a large ultrafast Kerr nonlinearity. We demonstrate power dependent switching in this novel optofluidic device. The large thermo-optical effect of liquids enables us to tune the behavior of the nonlinear coupler by changing the coupling strength with temperature. This opens the road towards flexible designs and realization of a new class of tunable ultrafast nonlinear couplers with switching times below 1 ps.
authors.affiliation: 14th Physics Institute and Research Center Scope, University of Stuttgart, Stuttgart, Germany. M.Vieweg@physik.uni‑stuttgart.de
authors.forename: Marius
authors.initials: M
authors.lastname: Vieweg
authors.forename: Sebastian
authors.initials: S
authors.lastname: Pricking
authors.forename: Timo
authors.initials: T
authors.lastname: Gissibl
authors.forename: Yaroslav V
authors.initials: YV
authors.lastname: Kartashov
authors.forename: Lluis
authors.initials: L
authors.lastname: Torner
authors.forename: Harald
authors.initials: H
authors.lastname: Giessen