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We demonstrate a new all-fiber technique for coherent spectral encoding and decoding based on temporal-spectral dispersion and recombination using suitably chirped fiber Bragg gratings. The application potential to optical-code division multiple access telecommunication is discussed.
We describe a system designed for simple and intuitive interaction with a large screen from a distance. The approach is based on an optical pointing and tracking system which has the important property that the tracking is absolute in nature. This provides several advantages over traditional methods used for input devices and remote controls, especially… (More)