Intended as an undergraduate/post graduate level textbook for courses on high speed optical networks as well as computer networks. Nine chapters cover basic principles of the technology and different devices for optical networks, as well as processing of integrated waveguide devices of optical networks using different technologies. It provides students, researchers and practicing engineers with an expert guide to the fundamental concepts, issues and state of the art developments in optical networks. Includes examples throughout all the chapters of the book to aid understanding of basic problems and solutions.