The present book is the account of a workshop on Integrated Optics and Micro-Optics with Polymers held in spring 1992 at Mainz and organized by IMM Institute of Microtechnology GmbH, the Max Planck Institute of Poly mer Research, and the Institute of Applied Physics of Friedrich Schiller University at Jena. The field of Integrated Optics and Micro-Optics with Polymers is receiving growing interest from multiple sides. Among the important reasons are the potential of tailoring materials for a specific application, the easy and cheap availability of those materials, and the possibilities of mass fabrica tion with plastiCS. Accordingly, materials researchers, microtechnologists, process engineers, and device builders are active in this field. Their interest is fed from prospective applications of integrated or micro-optical devices and systems in telecommunication, sensors, optical switching and routing, and, in a more distant future, optical processing. The workshop succeeded to bring together more than 130 experimenta lists and theorists, physicists and chemists, device developers and users, materials researchers and process engineers, as well as polymer scien tists and those dealing with anorganic materials, coming from industry, research institutes, and universities."