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Opt Express. 2009 Apr 27;17(9):7095-101.

Highly dispersive slot waveguides.

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  • 1Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA.


We propose a slot-waveguide with high dispersion, in which a slot waveguide is coupled to a strip waveguide. A negative dispersion of up to -181520 ps/nm/km is obtained due to a strong interaction of the slot and strip modes. A flat and large dispersion is achievable by cascading the dispersive slot-waveguides with varied waveguide thickness or width for dispersion compensation and signal processing applications. We show - 31300 ps/nm/km dispersion over 147-nm bandwidth with <1% variance.

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