Research in optical information technology in Europe has been very active inrecent years. This volume records state-of-the-art research conducted in some 22 laboratories who have worked together within EC ESPRIT Basic Research Action 3199 up to 1992. The topics cover: (1) Active optical logic and switching devices - embracing new materials, nonlinear and electrooptic mechanisms as well as advanced device fabrication. These devices cover the range from all-optical nonlinear interferometer structures through hybrid optical-electronic modulators to integrated emitter-receiver structures. (2) The...