This book explains physical principles, unique benefits, broad categories, implementation aspects, and performance criteria of distributed optical fiber sensors (DOFS). For each kind of sensor, the book highlights industrial applications, which range from oil and gas production to power line monitoring, plant and process engineering, environmental monitoring, industrial fire and leakage detection, and so on. The text also includes a discussion of such key areas as backscattering, launched power limitations, and receiver sensitivity, as well as a concise historical account of the field’s development.
Published by: CRC Press | Publication date: 05/25/2017Kindle book details: Kindle Edition, 471 pages
Optical Fibers describes the theoretical basis—electromagnetic theories—of transmission characteristics of optical fibers. The material and fabrication technologies are not described systematically, but only briefly where necessary to assist comprehension of the transmission characteristics. This book comprises 11 chapters, with an introductory chapter that discusses such topics as optical communications before the advent of optical fibers, a technical background of the subject matter, and a summary of its history. Succeeding chapters then discuss basic concepts and equations; ray theory of optical fibers; wave theory of uniform-core fibers; wave theory of nonuniform-core fibers; and classification and comparison of various analysis methods. Other chapters cover optimum refractive-index profile of optical fibers; optical fibers having structural fluctuations; measurement of refractive-index profile of optical fibers; measurement of transmission characteristics of optical fibers; and finally, some concluding remarks. This book will be of interest to practitioners in the fields of electronic engineering and electrical communications.
Published by: Academic Press | Publication date: 12/02/2012Kindle book details: Kindle Edition, 311 pages
Optical Fibers covers numerous research works on the significant advances in optical fibers, with particular emphasis on their application.This text is composed of three parts encompassing 15 chapters. The first part deals with the manufacture of optical fibers and the materials used in their production. The second part describes optical-fiber connectors, terminals and branches. The third part is concerned with the major optoelectronic components encountered in optical-communication systems.This book will be of value to research scientists, engineers, and patent workers.
Published by: Pergamon | Publication date: 07/22/2014Kindle book details: Kindle Edition, 650 pages
Optical Fiber Telecommunications VIA: Chapter 3. Advances in Photodetectors and Optical Receivers (Optics and Photonics)
This chapter reviews the significant advances in photodetectors that have occurred since Optical Fiber Telecommunications V. The quests for higher speed p-i-n detectors and lower noise avalanche photodiodes (APDs) with high gain-bandwidth product remain. To a great extent, high-speed structures have coalesced to evanescently coupled waveguide devices; bandwidths exceeding 140GHz have been reported. A primary APD breakthrough has been the development of Ge on Si separate-absorption-and-multiplication devices that achieve long-wavelength response with the low-noise behavior of Si. For III–V compound APDs ultra-low noise has been achieved by strategic use of complex multilayer multiplication regions that provide more deterministic impact ionization. However, much of the excitement and innovation have focused on photodiodes that can be incorporated into InP-based integrated circuits and photodetectors for Si photonics.
Published by: Academic Press | Publication date: 05/03/2013Kindle book details: Kindle Edition, 100 pages
Optical Fiber Telecommunications VIB: Chapter 6. Advanced Coding for Optical Communications (Optics and Photonics)
This chapter represents an overview of advanced coding techniques for optical communication. Topics include: codes on graphs, coded modulation, rate-adaptive coded modulation, and turbo equalization. The main objectives of this chapter are: (i) to describe different classes of codes on graphs of interest for optical communications, (ii) to describe how to combine multilevel modulation and channel coding, (iii) to describe how to perform equalization and soft-decoding jointly, and (iv) to demonstrate efficiency of joint de-modulation, decoding, and equalization in dealing with various channel impairments simultaneously. Codes on graphs of interest for next-generation FEC for high-speed optical transport include turbo codes, turbo-product codes and low-density parity-check (LDPC) codes. We describe both binary and nonbinary LDPC codes, their design and decoding algorithms. We also discuss an FPGA implementation of decoders for binary LDPC codes. We demonstrate that an LDPC-coded turbo equalizer is an excellent candidate to simultaneously mitigate uncompensated chromatic dispersion, PMD, fiber nonlinearities and I/Q-imbalance. For completeness of presentation, we also provide the information capacity study of optical channels with memory.
Kindle book details: Kindle Edition, 98 pages
Since the early 2000s Fiber-to-the-X, where X has many meanings to different operators, has taken off across the world and is seen as the main method to meet the continued growth in broadband needs of the residential and business customers. In this chapter we review the various architectures employed by operators across the world together with technologies that have been deployed to date and the new technologies that are under consideration for the future in order to meet their customers’ residential and business needs.
Kindle book details: Kindle Edition, 70 pages
Optical Fiber Telecommunications VIB: Chapter 19. Novel Architectures for Streaming/Routing in Optical Networks (Optics and Photonics)
Present-day networks are being challenged by dramatic increases in data rate demands of emerging applications. New network architectures for streaming/routing large “elephant” transactions will be needed for cost and power efficiencies. This chapter examines a number of possible optical network transport mechanisms: optical packet switching, burst switching, and flow switching and describes the necessary physical layer, routing, and transport layers architectures for these transport mechanisms. Performance comparisons are made based on capacity utilization, scalability, costs, and power consumption. A global-reach network architecture, incorporating optical flow switching, will provide significant lower cost and power consumption for large transactions. This transport mechanism will necessitate physical, media access control, routing, and transport layers and control plane architecture changes over the current Internet architecture and must co-exist with traditional TCP/IP electronic packet switching transport in the same optical network. Scalability in network management and control and session scheduling is identified as the most important driver in the architecture construct. The physical architecture coupled with a matched media access control protocol can help slow down the control plane and still can operate the network with highly dynamic sessions and at high efficiency which is critical for low cost and low power operations. For intra-data center networks when the network bandwidth is not as challenged as a wide area network some form of burst switching can be advantageous if fast light-weight protocols are needed albeit the network must be used at light occupancy for low collision probabilities.
Kindle book details: Kindle Edition, 44 pages
Optical Fiber Telecommunications VI (A&B) is the sixth in a series that has chronicled the progress in the R&D of lightwave communications since the early 1970s. Written by active authorities from academia and industry, this edition brings a fresh look to many essential topics, including devices, subsystems, systems and networks. A central theme is the enabling of high-bandwidth communications in a cost-effective manner for the development of customer applications. These volumes are an ideal reference for R&D engineers and managers, optical systems implementers, university researchers and students, network operators, and investors. Volume A is devoted to components and subsystems, including photonic integrated circuits, multicore and few-mode fibers, photonic crystals, silicon photonics, signal processing, and optical interconnections.
- All the latest technologies and techniques for developing future components and systems
- Edited by two winners of the highly prestigious OSA/IEEE John Tyndal award and a President of IEEE's Lasers & Electro-Optics Society (7,000 members)
- Written by leading experts in the field, it is the most authoritative and comprehensive reference on optical engineering the market
Published by: Academic Press | Publication date: 05/03/2013Kindle book details: Kindle Edition, 794 pages
Fundamentals of Optical Fiber Communication, Second Edition is a seven-chapter tutorial text that considers fiber optic technology as applied to communications systems. This book is based on lectures presented at an annual short course entitled "Fiber Optic Communication Systems" at the University of California at Santa Barbara.The first chapter provides an overview of the ideal optical fiber waveguide, its information carrying capacity, degree of imperfection, and propagation of perturbed waveguide leading to intermodal coupling of power. The next chapters describe the basic optical fiber cable configuration, the coupling components for optical fiber waveguides, and the electroluminescent sources for fiber systems. These topics are followed by discussions of the features and application of photodiodes, the development of a physical model for photodetection, circuit models for various detector types, and a statistical or noise model for optical receiver performance prediction. The concluding chapters describe the theory and practice of receiver and transmitter design, as well as the design considerations for multiterminal networks.This book will be of value to communications engineers, designers, and researchers.
Published by: Academic Press | Publication date: 12/02/2012Kindle book details: Kindle Edition, 351 pages
Troubleshooting Optical Fiber Networks offers comprehensive, state-of-the-art information about time-domain fiber-optic testing. Readers will gain an understanding of how to troubleshoot optical-fiber networks using an optical time-domain reflectometer (OTDR), while learning the fundamental principles underlying the operation of these powerful testing instruments. From basic fiber optics and fiber testing, to detailed event-analysis techniques, this book covers the entire spectrum of time-domain optical cable test theory and applications.
- Only book available focusing solely on OTDR theory and practice
- Covers the entire spectrum of time-domain optical cable test theory and applications
- Designed to be accessible to both engineers and system technicians
Published by: Academic Press | Publication date: 06/02/2004Kindle book details: Kindle Edition, 437 pages