Plasmonic slot waveguides with core nonlinearity

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Journal Article
Plasmonics, 2014, 9 (2), pp. 409 - 413
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© Springer Science+Business Media New York 2013. We analytically study the interplay between group velocity dispersion and material dispersion due to femtosecond ultrafast pulse inside plasmonic slot waveguides with nonlinear dielectric core. The analytic investigation of the role of the core nonlinearity on pulse propagation has been investigated. Interestingly, our model shows that the focusing and defocusing effects of the material can be revered if the material is confined inside the core of a plas-monic slot. We confirm our analytical results with nonlinear finite difference time domain (FDTD) simulations.
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