Professor Beat Friedli

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The singular value decomposition (SVD) and the QR decomposition (QRD) are two prominent matrix decomposition algorithms used in various signal processing applications. In the field of multiple-input multiple-output (MIMO) communication systems, the SVD and the QRD are employed for beamforming and for channel-matrix preprocessing for MIMO detection,(More)
The fabrication of air-bridge contacts for in-plane active photonic crystal devices is presented. The technology allows to access waveguides as narrow as 200nm. The main fabrication challenges described in detail are surface planarization and formation of isolation layers for contact pads. The issue of surface damage effects on dry-etched sidewalls is(More)
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