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Phase Modulated Optical Communication Systems

Author: Keang-Po Ho
Publisher: Springer Science & Business Media
ISBN: 9780387243924
Size: 10.97 MB
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Fiber-optic communication systems have revolutionized our telecommunication infrastructures – currently, almost all telephone land-line, cellular, and internet communications must travel via some form of optical fibers. In these transmission systems, neither the phase nor frequency of the optical signal carries information – only the intensity of the signal is used. To transmit more information in a single optical carrier, the phase of the optical carrier must be explored. As a result, there is renewed interest in phase-modulated optical communications, mainly in direct-detection DPSK signals for long-haul optical communication systems. When optical amplifiers are used to maintain certain signal level among the fiber link, the system is limited by amplifier noises and fiber nonlinearities. Phase-Modulated Optical Communication Systems surveys this newly popular area, covering the following topics: - The transmitter and receiver for phase-modulated coherent lightwave systems - Method for performance analysis of phase-modulated optical signals - Direct-detection DPSK signal with fiber nonlinearities, degraded by nonlinear phase noise and intrachannel effects - Wavelength-division-multiplexed direct-detection DPSK signals - Multi-level phase-modulated optical signals, such as the four-phase DQPSK signal. Graduate students, professional engineers, and researchers will all benefit from this updated treatment of an important topic in the optical communications field.

High Order Modulation For Optical Fiber Transmission

Author: Matthias Seimetz
Publisher: Springer Science & Business Media
ISBN: 3540937706
Size: 39.11 MB
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Catering to the current interest in increasing the spectral efficiency of optical fiber networks by the deployment of high-order modulation formats, this monograph describes transmitters, receivers and performance of optical systems with high-order phase and quadrature amplitude modulation. In the first part of the book, the author discusses various transmitter implementation options as well as several receiver concepts based on direct and coherent detection, including designs of new structures. Hereby, both optical and electrical parts are considered, allowing the assessment of practicability and complexity. In the second part, a detailed characterization of optical fiber transmission systems is presented, regarding a wide range of modulation formats. It provides insight in the fundamental behavior of different formats with respect to relevant performance degradation effects and identifies the major trends in system performance.

Digital Optical Communications

Author: Le Nguyen Binh
Publisher: CRC Press
ISBN: 142008206X
Size: 27.56 MB
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The need for advanced transmission techniques over long haul optically amplified communications has prompted a convergence of digital and optical communications. Digital Optical Communications explores the practical applications of this union and applies digital modulation techniques to optical communications systems. After reviewing the fundamentals of modern communications, the book focuses on enhancements to digital technology that are leading to greater effectiveness within ultra-high capacity networks. It highlights the use of communication techniques in both optical transmission systems and networks, such as binary and quadrature amplitude shift keying, differential shift keying, continuous phase shift keying, and multi-level modulation. The author minimizes unwieldy mathematical analysis and instead emphasizes operation principles. Supplemented with case studies and numerous examples, the book provides the theoretical foundations and technical developments required to engineer faster transmissions. A practical survey of advanced aspects of modulation techniques, this book provides a fundamental understanding of the application of digital communication techniques to optical communication technology.

Applications Of Nonlinear Fiber Optics

Author: Govind Agrawal
Publisher: Academic Press
ISBN: 0080568769
Size: 45.82 MB
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* The only book describing applications of nonlinear fiber optics * Two new chapters on the latest developments: highly nonlinear fibers and quantum applications * Coverage of biomedical applications * Problems provided at the end of each chapter The development of new highly nonlinear fibers - referred to as microstructured fibers, holey fibers and photonic crystal fibers - is the next generation technology for all-optical signal processing and biomedical applications. This new edition has been thoroughly updated to incorporate these key technology developments. The book presents sound coverage of the fundamentals of lightwave technology, along with material on pulse compression techniques and rare-earth-doped fiber amplifiers and lasers. The extensively revised chapters include information on fiber-optic communication systems and the ultrafast signal processing techniques that make use of nonlinear phenomena in optical fibers. New material focuses on the applications of highly nonlinear fibers in areas ranging from wavelength laser tuning and nonlinear spectroscopy to biomedical imaging and frequency metrology. Technologies such as quantum cryptography, quantum computing, and quantum communications are also covered in a new chapter. This book will be an ideal reference for: R&D engineers working on developing next generation optical components; scientists involved with research on fiber amplifiers and lasers; graduate students and researchers working in the fields of optical communications and quantum information. * The only book on how to develop nonlinear fiber optic applications * Two new chapters on the latest developments; Highly Nonlinear Fibers and Quantum Applications * Coverage of biomedical applications

Optical Fiber Communications Systems

Author: Le Nguyen Binh
Publisher: CRC Press
ISBN: 1439806217
Size: 33.30 MB
Format: PDF, Kindle
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Carefully structured to provide practical knowledge on fundamental issues, Optical Fiber Communications Systems: Theory and Practice with MATLAB® and Simulink® Models explores advanced modulation and transmission techniques of lightwave communication systems. With coverage ranging from fundamental to modern aspects, the text presents optical communication techniques and applications, employing single mode optical fibers as the transmission medium. With MATLAB and Simulink models that illustrate methods, it supplies a deeper understanding of future development of optical systems and networks. The book begins with an overview of the development of optical fiber communications technology over the last three decades of the 20th century. It describes the optical transmitters for direct and external modulation technique and discusses the detection of optical signals under direct coherent and incoherent reception. The author also covers lumped Er:doped and distributed Roman optical amplifiers with extensive models for the amplification of signals and structuring the amplifiers on the Simulink platform. He outlines a design strategy for optically amplified transmission systems coupled with MATLAB Simulink models, including dispersion and attenuation budget methodology and simulation techniques. The book concludes with coverage of advanced modulation formats for long haul optical fiber transmission systems with accompanied Simulink models. Although many books have been written on this topic over the last two decades, most of them present only the theory and practice of devices and subsystems of the optical fiber communications systems in the fields, but do not illustrate any computer models to represent the true practical aspects of engineering practice. This book fills the need for a text that emphasizes practical computing models that shed light on the behavior and dynamics of the devices.

Impact Of Nonlinearities On Fiber Optic Communications

Author: Shiva Kumar
Publisher: Springer Science & Business Media
ISBN: 9781441981394
Size: 75.87 MB
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This book covers the recent progress in fiber-optic communication systems with a main focus on the impact of fiber nonlinearities on the system performance. Over the past few years, there has been significant progress in coherent communication systems mainly because of the advances in digital signal processing techniques. This has led to renewed interest in fiber linear and nonlinear impairments and techniques to mitigate them in electrical domain. In this book, the reader will find all the important topics of fiber optic communication systems in one place with in-depth coverage by the experts of each subtopics. Pioneers from each of the sub-topics have been invited to contribute. Each chapter will have a section on fundamentals, review of literature survey and the recent developments. The reader will benefit from this approach since many of the conference proceedings and journal articles mainly focus on the authors’ research work without spending space on preliminaries.

Nonlinear Fiber Optics

Author: Govind P. Agrawal
Publisher: Academic Press
ISBN: 0123970237
Size: 48.45 MB
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Machine generated contents note: ch. 1 Introduction -- 1.1.Historical Perspective -- 1.2.Fiber Characteristics -- 1.2.1.Material and Fabrication -- 1.2.2.Fiber Losses -- 1.2.3.Chromatic Dispersion -- 1.2.4.Polarization-Mode Dispersion -- 1.3.Fiber Nonlinearities -- 1.3.1.Nonlinear Refraction -- 1.3.2.Stimulated Inelastic Scattering -- 1.3.3.Importance of Nonlinear Effects -- 1.4.Overview -- Problems -- References -- ch. 2 Pulse Propagation in Fibers -- 2.1.Maxwell's Equations -- 2.2.Fiber Modes -- 2.2.1.Eigenvalue Equation -- 2.2.2.Single-Mode Condition -- 2.2.3.Characteristics of the Fundamental Mode -- 2.3.Pulse-Propagation Equation -- 2.3.1.Nonlinear Pulse Propagation -- 2.3.2.Higher-Order Nonlinear Effects -- 2.3.3.Raman Response Function and its Impact -- 2.3.4.Extension to Multimode Fibers -- 2.4.Numerical Methods -- 2.4.1.Split-Step Fourier Method -- 2.4.2.Finite-Difference Methods -- Problems -- References -- ch. 3 Group-Velocity DispersionNote continued: 3.1.Different Propagat ...

Theory And Design Of Terabit Optical Fiber Transmission Systems

Author: Stefano Bottacchi
Publisher: Cambridge University Press
ISBN: 0521192692
Size: 80.98 MB
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This comprehensive, modular treatment of the challenging issues involved in very high-speed optical transmission systems contains all the theory and practical design criteria required to optimise transmission system design. Each chapter covers the theoretical modelling of a given system; chapters are well supported by real-world worked examples and accompanied by MATLAB code and receiver design examples. Critical analysis and comparison of engineering solutions is presented, to make clear the principles underlying system performance optimisation, and a broad range of transmission systems is discussed, including the status and performance demands of the Terabit systems now entering the next generation market. Blending theoretical and practical considerations for high-speed fibre optic systems design, this is an indispensable reference for all forward-looking professionals and researchers in optical communications.

Optical Fiber Telecommunications Iv B

Author: Ivan Kaminow
Publisher: Elsevier
ISBN: 9780080513195
Size: 42.52 MB
Format: PDF
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Volume B is devoted to light wave systems and system impairments and compensation. Some of the topics include growth of the Internet, network architecture, undersea systems, high speed TDM transmission, cable TV systems, access networks, simulation tools, nonlinear effects, polarization mode dispersion, bandwidth formats, and more. This book is an excellent companion to Optical Fiber Telecommunications IVA: Components (March 2002, ISBN: 0-12-395172-0). Fourth in a respected and comprehensive series - Authoritative authors from a range of organizations - Suitable for active lightwave R&D designers, developers, purchasers, operators, students, and analysts - Lightwave components reviewed in Volume A - Lightwave systems and impairments reviewed in Volume B - Up-to-the minute coverage

Fundamentals Of Optical Fibers

Author: John A. Buck
Publisher: John Wiley & Sons
ISBN: 9780471221913
Size: 65.26 MB
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Fundamentals of Optical Fibersoffers students a timely, pedagogically consistent introduction to the fundamental principles of light propagation in fibers. In it, Professor John A. Buck reviews, in depth, fundamental waveguiding concepts, the influence of various fiber structures and materials on light transmission, nonlinear light propagation effects occurring in fibers, and various measurement techniques. Since the chief application of optical fibers is in communication systems, throughout the book the focus is on topics which pertain to that domain. In the first part of the text, the author lays the groundwork for later discussions with a detailed review of the relevant electromagnetic principles and how they apply to the analysis of wave propagation. He also introduces basic field equations and delineates the fundamental principles of dielectric wave-guides. In the second part, he explores the limitations of fiber transmission, paying particular attention to the problems of loss and dispersion. He reviews fabrication procedures and alternative fiber designs as they relate to minimizing loss and dispersion. And he presents field analysis methods for single mode and multimode fibers having graded index profiles. In the last part, Professor Buck reviews the basics of nonlinear optics and discusses the origins of nonlinear effects and the conditions under which they appear in fibers. This section also features a discussion of fiber amplifiers, along with a review of the fundamentals of light amplification by stimulated emission. Offering a well-balanced presentation of the basics of light propagation in fibers, and including real-world examples and end-of-chapter problems, Fundamentalsof Optical Fibers is an excellent text for senior- to graduate-level courses in electrical engineering or physics. It is accessible to anyone who has taken at least a one-semester course in electromagnetics at the undergraduate level.