Research in optical information technology in Europe hasbeen very active inrecent years. This volume recordsstate-of-the-art research conducted in some 22 laboratorieswho have worked together within EC ESPRIT Basic Research Action 3199 up to 1992. The topics cover:(1) Active optical logic and switching devices – embracingnew materials, nonlinear and electrooptic mechanisms as wellas advanced device fabrication. These devices cover therange from all-optical nonlinear interferometer structuresthrough hybrid optical-electronic modulators to integratedemitter-receiver structures. (2) The latest state of optical interconnect technology, embracing diffractive optics (binary and multi-level phasegratings), holographic space-variant elements andmicro-refractive optics. (3) Contributions on optical information processingarchitecture and demonstrator projects. The materials baseranges from silicon to II-VI materials with the realisationof pn-junction devices in Zn Se. The research reported here lays the basis for long-termprogress in devices for information processing.
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