title: Flat and low dispersion in highly nonlinear slot waveguides.
abstract: We propose highly nonlinear slot waveguides with flat and low dispersion over a wide wavelength range. Si nano-crystal and chalcogenide glass are considered as slot materials. Over a 244-nm bandwidth, dispersion of 0+/-0.16 ps/(nmxm) is achieved in a silicon nano-crystal slot waveguide, with a nonlinear coefficient of 2874 /(Wm). The As(2)S(3) slot waveguide exhibits dispersion of 0+/-0.17 ps/(nmxm) over a bandwidth of 249 nm, with a nonlinear coefficient 16 times larger than that of As(2)S(3) rib waveguides and a nonlinear figure of merit three times larger than that of Si strip waveguides.
authors.affiliation: Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA. linzhang@usc.edu
authors.forename: Lin
authors.initials: L
authors.lastname: Zhang
authors.forename: Yang
authors.initials: Y
authors.lastname: Yue
authors.forename: Yinying
authors.initials: Y
authors.lastname: Xiao-Li
authors.forename: Jian
authors.initials: J
authors.lastname: Wang
authors.forename: Raymond G
authors.initials: RG
authors.lastname: Beausoleil
authors.forename: Alan E
authors.initials: AE
authors.lastname: Willner