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We use photonic crystal nanocavities to enhance the light emission for Erbium implanted silicon. This is a promising route for the realization of a silicon light source.
We demonstrate high speed modulation based on a compact silicon ring resonator operating in depletion mode. Our device features an electrical small signal bandwidth of approximately 19 GHz, which is the fastest silicon ring resonator modulator reported to date.
We demonstrate a silicon optical switch that can reroute optical signals within a switching time of just 3 ps. The switch is based on photonic crystal waveguides in a directional coupler geometry. The dispersion of the device has been engineered to provide slow-light enhancement, which allows the switching length of the device to be just 5 mum. The 3 ps switching time is demonstrated using free-carriers...
In this work, wavelength-resolved laser light scattering can be used as a high-resolution technique for a precise characterization of passive photonic crystal (PhC) nanocavities with very high Q factors, thus offering a valid alternative to current experimental approaches based on waveguide coupling or photoluminescence . The effect of disorder on the symmetry of the cavity mode is studied. By measuring...
We demonstrate that we can switch the transmission of a directional coupler from one output port to another within a time as short as 3 ps with laser pulse energies of less than 10 pJ.
We demonstrate a very compact multifunctional photonic-crystal demultiplexer on high index contrast InP-membrane for coarse WDM applications. Polarization diversity is implemented using 2D-grating couplers. The performance of the device is evaluated using integrated p-i-n photodetectors. Polarization diversity from fiber to detector-without intermediate functional device-results in a minimal polarization...
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