Success in erbium doped fiber amplifier (EDFA) research has stimulated the development of Er doped glass planar waveguide devices. Planar waveguide components, allowing integration with other optoelectronic devices on the same chip and efficient waveguide-to-fiber coupling, are very attractive for .....
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During the turn-on and turn-off switching processes, power converters have to withstand high voltage and current, leading to high switching losses and stresses. The invention is a passive lossless snubber cell with minimum stress and wide soft-switching range. The energy reset / recirculation proces.....
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This invention presents light maximization method for LED systems. Derived from a general theory that links the photometric, electric and thermal behaviours of LED systems together, the method provides the rules to design LED systems with maximum light output. Its main contribution is to provide cle.....
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The thin film transistors (TFT) have been built on patterned flexible bilayer acid/metal oxide dielectrics polymer substrate by solution process. Based on this TFT technology, RFID tags and amine sensors have been fabricated with low cost using inexpensive molecular materials. Fabrication through so.....
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The universal rate control scheme can be adapted to various transuding purposes including real-time video transcoding. A new rate-distortion (RD) model is established for better characterization of the real RD feature of transcoding. A level-window rate control (WRC) algorithm is proposed for provid.....
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