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.