IEEE Student Chapter Seminar: “NanoSilicon NanoPhotonics” - L. Pavesi
Monday, December 5, 2011 / 11-12pm
Nanoscience Laboratory, Department of
Silicon Photonics is no more an emerging research topica but is an actual technology with commercial products already available on the market. Quantum confinement of carriers or spatial localization of photonics allow to dramatically enhance and widen the scope and potential of silicon photonics.
After a review of silicon photonics where the state of the art is presented, the optical properties of silicon reduced to nanometric dimensions are introduced. The use of nano-Si in silicon photonics (waveguides, modulators, switches, sources and detectors) is reviewed and discussed. Recent advances of nano-Si devices such as bio-imagers, optical resonators (linear, rings, and disks) are treated. The development of high efficiency light emitting diodes for interchip bidirectional optical interconnects is presented as well as the recent progresses to exploit nano-Si for solar cells. In addition, non-linear optical effects which enable fast all-optical switches are described. On the other hand, confinement of photons to small microresonators allows tuning the photon properties. Here also novel effects are found. Ultra high bandwidth robust optical switches for UDWDM, active suspended microdisk bistable devices, nonlinear optical generations are only few applications where nanophotonics can be appreciated.
Lorenzo Pavesi is Professor of Experimental Physics at the
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IEEE President / Graduate Research Assistant