Telecommunication networks based on optical fiber technology have become a major information-transmission system, with high-capacity optical fiber links encircling the globe in both terrestrial and undersea installations. In the early days of optical fiber communications, the applications involved basically only the optical fiber, a light source, and a photodetector. Now there are numerous passive and active optical devices within a lightwave link that perform complex networking functions in the optical domain such as signal restoration, routing, and switching. Along with the need to understand the functions of these devices comes the necessity to measure both component and network performance, and to model and simulate the complex behavior of reliable high-capacity networks.
This book presents the fundamental principles for understanding and applying optical fiber technology to such sophisticated modern telecommunication systems. This text methodically examines the fundamental behavior of the individual optical components, describes their interactions with other devices in an optical fiber link, discusses the behavior of basic analog and digital optical links, and examines the performance characteristics of complex optical links and networks. Key features of the text for accomplishing this are
The modeling and simulation program on the CD-ROM is an abbreviated version of the Photonic Transmission Design SuiteÒ (PTDS) from Virtual Photonics, Inc. This program is called PTDS Lite, and is intended for student use. The software on the CD-ROM will allow students to examine the performance of key components (e.g., laser diodes, optical couplers, optical amplifiers, and photodetectors) and of basic links consisting of these components. There are predefined parameter sets for each component, but, using Windows-based input screens, the user can vary any of these parameters (e.g., fiber length) and can turn them on and off to see their effect on link performance. This is a Windows-based program, so it can run on any standard PC having the appropriate random-access memory and disk size.
This book provides the basic material for an introductory senior-level or graduate course in the theory and application of optical fiber communication technology. It will also serve well as a working reference for practicing engineers dealing with optical fiber communication system designs. The background required to study the book is that of typical senior-level engineering students. This includes introductory electromagnetic theory, calculus and elementary differential equations, basic concepts of optics as presented in a freshman physics course, and the basic concepts of electronics. To refresh the readers’ memories, concise reviews of several background topics, such as optics concepts, electromagnetic theory, and basic semiconductor physics, are included in the main body of the text. In this edition, various sections dealing with advanced material (e.g., the application of Maxwell’s equations to cylindrical waveguides and the mathematical theory of optical receivers) are designated by a star and can be skipped over without loss of continuity. To aid readers in learning the material and applying it to practical designs, numerous examples are given throughout the book. A collection of 266 homework problems is included to help test the reader’s comprehension of the material covered, and to extend and elucidate the text. Instructors can obtain the problem solutions from the publisher.
The original concept of this book is attributable to Tri T. Ha, Naval Postgraduate School, who urged me to write it when we were colleagues at GTE. His suggestions for the first two editions were most helpful. For this edition, I am greatly indebted to Ira Jacobs, Virginia Polytechnic Institute, and Don Nicholson, Syracuse University, for critical reviews of the manuscript and suggestions for enhancing and clarifying the material. In addition, I am grateful to Lian-kuan Chen, The Chinese University of Hong Kong; Walter Johnstone, University of Strathclyde, Scotland; and Winston I. Way, National Chiao-Tung University, Taiwan, for critical reviews of material in the newer chapters. Special thanks go to Dirk Seewald, Kay Iverson, Arthur Lowery (also of the University of Melbourne), and Stefan Georgi of Virtual Photonics for supplying the CD-ROM with the modeling tool and for reviewing the manuscript. Numerous people have helped directly or indirectly with various aspects of this book and its previous editions. Among them are Bert Basch, Joanne LaCourse and Bill Nelson, GTE Laboratories; Sonia Bélanger, EXFO; C. T. Chang, San Diego State University; Emmanuel Desurvire, Alcatel Alsthom Researche, France; Paul Green, Jr., Tellabs; Katie Hall, MIT Lincoln Laboratory; Mark Jerabek, West Virginia University; Mohsen Kavehrad, University of Pennsylvania; Nishla Keiser, MIT; Arnie Michelson, GTE; Fred Quan, Corning; Don Rice, happily retired from GTE and Tufts University; Paul Schumate, Jr., Telcordia Technologies; Ramakant Srivastava, University of Florida; and Dan Yang, AFC Technologies. Particularly encouraging for doing the third edition were the many positive comments on the previous editions received from users and adapters at numerous institutions worldwide. This edition especially benefited from the expert guidance of Betsy Jones, Michelle Flomenhoft, and Christina Thornton-Villagomez of McGraw-Hill. As a final personal note, I am grateful to my wife Ching-yun and my daughter Nishla for their patience and encouragement during the time I devoted to writing and revising this book.
Gerd Keiser
July 1999
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