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We experimentally demonstrate electrooptic modulation in silicon at 18 Gbps (NRZ) in a micro-ring of 12 micron diameter using a pre-emphasis technique. Device simulations indicate that this technique can extend the bit rate to 40 Gbps.
We experimentally demonstrate an electro-optic modulator using a high-index-contrast silicon Fabry-Perot resonator. This compact high-speed device is a 1-D integrated cavity, only 4.53 mum in length with an embedded p-i-n junction on a silicon-on-insulator platform
We demonstrate a 20-mum-radius disk resonator based on Si/SiO2 slot-waveguide. Quality factors around 1,000 are measured. Low effective refractive index evidences light guiding in the low index SiO2 layer.
We demonstrate a low loss metal slot waveguide of deep subwavelength confinement (~lambda/10) and efficient coupling with standard silicon wire waveguides for on chip integration.
A ring resonator with a FWHM of 0.095 nm (11.6 GHz) is experimentally measured to have a 1.4 dB power penalty for a 10 Gbps NRZ OOK signal, due to spectral distortions. Numerical simulations match these results.
We show experimentally an all-optical analogue to electromagnetically induced transparency due to coherent interference between two coupled resonators. We measured an EIT-like resonance mode with quality factor of 11,800 using silicon ring resonators.
This paper describes an integrated writing support system that includes diagnostic tests, online scaffolding, computer-based coaching, and peer collaboration and feedback tools. The system has been tailored to improve students' self-regulation skills in the domain of writing and to foster their understanding of writing as means for negotiating shared understandings
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