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We show that the dispersion of nonlinearity can be engineered in silicon slot waveguides over a wide wavelength range. A hardly observable nonlinear effect - reversed self-steepening now becomes possible on a chip.
We propose a dispersion-flattened silicon waveguide that exhibits a flat and near-zero dispersion within ±16 ps/nm/km over a 550-nm wavelength range. Averaged dispersion can be shifted from negative to positive with almost the same flatness.
We propose on-chip slot-waveguide-based dispersion-flattening devices, which can exhibit either a highly negative dispersion of -31300 ps/nm/km over 147-nm bandwidth, or a near-zero dispersion of 0plusmn350 ps/nm/km over 306 nm bandwidth.
We propose a slot-waveguide-based dispersion compensator with a negative dispersion of -181520 ps/nm/km. Dispersion compensation for a 320 Gb/s NRZ signal at 11-km fiber transmission has an eye-opening penalty of 4 dB.
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