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We show cascaded silicon microring resonators with 1.5-mum radius critically coupled to a narrower waveguide. A coupled Q of 9,000 is achieved. Devices are fabricated with the widely-available SEM-based lithography system using a stitching-free design.
Supercollimation is the diffraction-less propagation of light using the dispersion properties of specially-designed photonic crystals. We have measured supercollimation in photonic crystals composed of nano-scale rods over distances of up to one thousand lattice periods.
In this paper, we present a PhC modulator-switch that demonstrates active control over signal routing. We design and characterize a photonic crystal (PhC) based silicon electro-optic modulator.
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