Download or read book A Spectral Phase Encoded Time Spreading Optical Code Division Multiple Access Testbed written by Wei Cong and published by . This book was released on 2006 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Optical Code Division Multiple Access written by Paul R. Prucnal and published by CRC Press. This book was released on 2018-10-03 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: Code-division multiple access (CDMA) technology has been widely adopted in cell phones. Its astonishing success has led many to evaluate the promise of this technology for optical networks. This field has come to be known as Optical CDMA (OCDMA). Surveying the field from its infancy to the current state, Optical Code Division Multiple Access: Fundamentals and Applications offers the first comprehensive treatment of OCDMA from technology to systems. The book opens with a historical perspective, demonstrating the growth and development of the technologies that would eventually evolve into today's optical networks. Building on this background, the discussion moves to coherent and incoherent optical CDMA coding techniques and performance analysis of these codes in fiber optic transmission systems. Individual chapters provide detailed examinations of fiber Bragg grating (FBG) technology including theory, design, and applications; coherent OCDMA systems; and incoherent OCDMA systems. Turning to implementation, the book includes hybrid multiplexing techniques along with system examples and conversion techniques to connect networks that use different multiplexing platforms, state-of-the-art integration technologies, OCDMA network security issues, and OCDMA network architectures and applications, including a look at possible future directions. Featuring contributions from a team of international experts led by a pioneer in optical technology, Optical Code Division Multiple Access: Fundamentals and Applications places the concepts, techniques, and technologies in clear focus for anyone working to build next-generation optical networks.
Download or read book Optical Code Division Multiple Access Communication Networks written by Hongxi Yin and published by Springer Science & Business Media. This book was released on 2009-03-15 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optical code division multiple access (OCDMA) communication network technology will play an important role in future optical networks, such as optical access and metropolitan area networks. OCDMA technology can also be applied to implement optical signal multiplexing and label switching on backbone networks. Optical Code Division Multiple Access Communication Networks - Theory and Applications introduces the code theory of OCDMA, the methods and technologies of OCDMA encoding and decoding, the theory and methods of analyzing OCDMA systems with various receiver models and realizing multiple-class services with different bit rates and QoS. In addition, OCDMA network architectures, protocols and applications are discussed in detail. The up-to-date theoretical and experimental results on OCDMA systems and networks are also reported. A large number of encoding/decoding examples and many analysis and simulation results of code and system performances are given. It is a valuable text and/or reference book for postgraduates majoring in telecommunication and photonics to obtain a well-knit theoretical foundation and for engineers in R&D and management of optical communications. Dr. Yin is an Associate Professor of the School of Electronics Engineering and Computer Science at Peking University, China, and was a Visiting Research Fellow of Optoelectronics Research Centre (ORC) at University of Southampton, UK. Dr. Richardson is a Professor for optical communications and Deputy Director of ORC at University of Southampton, UK, and is responsible for much of the ORC's fiber related activities.
Download or read book Resolution of Security Vulnerabilities in SPECTS O CDMA and Field Trial Performance written by Chunxin Yang and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The global demand for secure high-speed and high-capacity Internet communications has stimulated the need to develop optical fiber access networks. Optical code division multiple access (O-CDMA), which offers flexible bandwidth allocation and simplified network management as well as potential physical layer security, is a promising candidate for future access networks. Spectral phase encode time spreading (SPECTS) is a coherent O-CDMA encoding method, and it potentially supports a large number of users while maintaining high speeds. This technique applies a unique code assigned to a user as a sequence of phase shifts across the spectrum of the user's optical pulses. This dissertation focuses on resolving certain challenges in SPECTS O-CDMA, including reported security vulnerabilities and the influence of impairments in fiber links. One security vulnerability is weak confidentiality that arises because the feasible O-CDMA codes are limited to a small number of code families. This dissertation experimentally demonstrates a phase-masking concept which applies a sequence of random phase variations to all of the users in a network on top of the O-CDMA codes. The phase mask effectively hides the codes and enhances the confidentiality. Another security vulnerability is that an eavesdropper can intercept an isolated single-user data stream without the need to decode the O-CDMA data stream. This dissertation presents the four-state encoded data modulation as a resolution. This technique encodes the user data in the electrical domain and distributes the encoded sequence across four distinct waveforms. It effectively defeats eavesdropping based on energy detection or differential phase-shift keying detection and enhances security on the upstream links of O-CDMA networks. A SPECTS O-CDMA testbed with FPGA based four-state coding at 2.5 Gb/s was demonstrated. This dissertation presents a field trial of SPECTS O-CDMA over 150 km of single mode fiber. The testbed employed a fully integrated O-CDMA coding device and a tunable dispersion slope compensator which is a pulse shaper with a deformable mirror to provide a cubic-function spectral phase. The field trial overcame the influence of fiber impairments and showed the viability of SPECTS O-CDMA in a realistic telecommunication environment.
Download or read book Optical Coding Theory with Prime written by Wing C. Kwong and published by CRC Press. This book was released on 2018-09-03 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although several books cover the coding theory of wireless communications and the hardware technologies and coding techniques of optical CDMA, no book has been specifically dedicated to optical coding theory—until now. Written by renowned authorities in the field, Optical Coding Theory with Prime gathers together in one volume the fundamentals and developments of optical coding theory, with a focus on families of prime codes, supplemented with several families of non-prime codes. The book also explores potential applications to coding-based optical systems and networks. Learn How to Construct and Analyze Optical Codes The authors use a theorem-proof approach, breaking down theories into digestible form so that readers can understand the main message without searching through tedious proofs. The book begins with the mathematical tools needed to understand and apply optical coding theory, from Galois fields and matrices to Gaussian and combinatorial analytical tools. Using a wealth of examples, the authors show how optical codes are constructed and analyzed, and detail their performance in a variety of applications. The book examines families of 1-D and 2-D asynchronous and synchronous, multilength, and 3-D prime codes, and some non-prime codes. Get a Working Knowledge of Optical Coding Theory to Help You Design Optical Systems and Networks Prerequisites include a basic knowledge of linear algebra and coding theory, as well as a foundation in probability and communications theory. This book draws on the authors’ extensive research to offer an authoritative reference on the emerging field of optical coding theory. In addition, it supplies a working knowledge of the theory and optical codes to help readers in the design of coding-based optical systems and networks. For more on the technological aspects of optical CDMA, see Optical Code Division Multiple Access: Fundamentals and Applications (CRC Press 2005).
Download or read book Investigation of Coherent Spectral and Incoherent Wavelength time Optical Code Division Multiple Access O CDMA Systems written by Vincent Jose Hernandez and published by . This book was released on 2007 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Encyclopedia of Image Processing written by Phillip A. Laplante and published by CRC Press. This book was released on 2018-11-08 with total page 1852 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Encyclopedia of Image Processing presents a vast collection of well-written articles covering image processing fundamentals (e.g. color theory, fuzzy sets, cryptography) and applications (e.g. geographic information systems, traffic analysis, forgery detection). Image processing advances have enabled many applications in healthcare, avionics, robotics, natural resource discovery, and defense, which makes this text a key asset for both academic and industrial libraries and applied scientists and engineers working in any field that utilizes image processing. Written by experts from both academia and industry, it is structured using the ACM Computing Classification System (CCS) first published in 1988, but most recently updated in 2012.
Download or read book Summaries of Papers Presented at the Optical Fiber Communication Conference written by and published by . This book was released on 2005 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conference on Lasers and Electro optics written by and published by . This book was released on 2004 with total page 1700 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book OFC NFOEC Friday March 11 2005 written by and published by . This book was released on 2005 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2007 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Performance Optical CDMA Networks with Non linear All optical Thresholders written by Yixue Du and published by . This book was released on 2008 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book All optical Code Division Multiple Access CDMA Systems Using Spectral Encoding written by Cedric Fung Lam and published by . This book was released on 1996 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Arrayed Waveguide Gratings AWG and Optical Amplifier Subsystems for Their Applications in Advanced Optical Networks written by Jing Cao and published by . This book was released on 2007 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Active and Passive Optical Components for WDM Communications written by and published by . This book was released on 2003 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Active and Passive Optical Components for WDM Communications IV written by Achyut K. Dutta and published by SPIE-International Society for Optical Engineering. This book was released on 2004 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.
Download or read book Ultrafast Optics written by Andrew M. Weiner and published by John Wiley & Sons. This book was released on 2011-09-20 with total page 529 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive treatment of ultrafast optics This book fills the need for a thorough and detailed account of ultrafast optics. Written by one of the most preeminent researchers in the field, it sheds new light on technology that has already had a revolutionary impact on precision frequency metrology, high-speed electrical testing, biomedical imaging, and in revealing the initial steps in chemical reactions. Ultrafast Optics begins with a summary of ultrashort laser pulses and their practical applications in a range of real-world settings. Next, it reviews important background material, including an introduction to Fourier series and Fourier transforms, and goes on to cover: Principles of mode-locking Ultrafast pulse measurement methods Dispersion and dispersion compensation Ultrafast nonlinear optics: second order Ultrafast nonlinear optics: third order Mode-locking: selected advanced topics Manipulation of ultrashort pulses Ultrafast time-resolved spectroscopy Terahertz time-domain electromagnetics Professor Weiner's expertise and cutting-edge research result in a book that is destined to become a seminal text for engineers, researchers, and graduate students alike.
