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We numerically analyze chromatic dispersion in tightly curved strip and slot waveguides with high index contrast. Zero-dispersion-wavelength may have a shift over 220 nm when bending radius is reduced to a few microns.
We report tributary channel data traffic grooming/exchange of pol-muxed DPSK signal based on Kerr-induced nonlinear polarization rotation. 8 tributary channel data grooming between two pol-muxed 80-Gbit/s DPSK channels is demonstrated with a penalty of <4 dB.
Vertically-slotted waveguides are used to achieve low nonlinearity. Compared with strip waveguide, it demonstrates a >25× reduction in the nonlinear coefficient for a 100-nm wavelength range.
Dual slot waveguides incorporate a sub-core in the slot, so that the guided beam is confined two-dimensionally. The modification enlarges the room for tailoring dispersive properties and birefringence. Both zero-dispersion and constant-dispersion points are demonstrated.
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.
A silicon slotted ring resonator with flattened dispersion in the cavity is proposed to produce uniform spectral lines in on-chip frequency comb generations. Standard deviation of the free spectral range is improved by 250 times as compared to a strip waveguide in the same size.
The high-contrast gratings assisted hollow-core waveguide demonstrates an ultra-low nonlinearity (<6 ?? 10-13 /W/m). Digital and analog system-level simulations further show that the waveguide does not introduce any observable nonlinearity-induced penalty.
We report the phase-transparent optical data exchange based on non-degenerate FWM in an HNLF via theoretical analysis and experimental verification. 40-Gbit/s NRZ-DPSK data exchange is demonstrated with a power penalty (at 10-9) ~ 4.5 dB.
We demonstrate tributary channel data grooming of high-speed signals using second-order nonlinearities in a PPLN waveguide. 16 TDM tributary channel data traffic grooming/exchange between two 160-Gbit/s WDM signals is shown with a penalty of ~4 dB.
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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