Emerging Optical Network Technologies

This book addresses many of these issues and presents a birds eye view of some of the more promising technologies.

Emerging Optical Network Technologies

Author: Krishna M. Sivalingam

Publisher: Springer

ISBN: 9780387225845

Page: 454

View: 280

Optical networks have moved from laboratory settings and theoretical research to real-world deployment and service-oriented explorations. New technologies such as Ethernet PON, traffic grooming, regional and metropolitan network architectures and optical packet switching are being explored, and the landscape is continuously and rapidly evolving. Some of the important issues involving these new technologies involve the architectural, protocol, and performance related issues. This book addresses many of these issues and presents a birds eye view of some of the more promising technologies. Researchers and those pursuing advanced degrees in this field will be able to see where progress is being made and new technologies are emerging. Emerging Optical Network Technologies: Architectures, Protocols and Performance provides state-of-the-art material written by the most prominent professionals in their respective areas.

The Emerging Optical Network

Designed to help readers understand the very latest optical developments, technologies, architectures, and market trends driving the next-generation network, this comprehensive report of all-optical networks (AON) is a critical resource for ...

The Emerging Optical Network

Author: International Engineering Consortium

Publisher: Intl. Engineering Consortiu

ISBN: 9780933217973

Page: 372

View: 592

Designed to help readers understand the very latest optical developments, technologies, architectures, and market trends driving the next-generation network, this comprehensive report of all-optical networks (AON) is a critical resource for any communications company that hopes to tackle today's optical networking challenge. The future of the AON remains uncertain, but the next-generation optical network promises to provide the bandwidth flexibility, reliability, and network-management functions required to enable end-to-end wavelength services.

Design Implementation and Analysis of Next Generation Optical Networks Emerging Research and Opportunities

Featuring research on topics such as artificial intelligence, electromagnetic interface, and wireless communication, this book is ideally designed for researchers, engineers, scientists, and students interested in understanding, designing, ...

Design  Implementation  and Analysis of Next Generation Optical Networks  Emerging Research and Opportunities

Author: Imtiaz, Waqas Ahmed

Publisher: IGI Global

ISBN: 1522597697

Page: 221

View: 228

By the end of the decade, approximately 50 billion devices will be connected over the internet using multiple services such as online gaming, ultra-high definition videos, and 5G mobile services. The associated data traffic demand in both fixed and mobile networks is increasing dramatically, causing network operators to have to migrate the existing optical networks towards next-generation solutions. The main challenge within this development stems from network operators having difficulties finding cost-effective next-generation optical network solutions that can match future high capacity demand in terms of data, reach, and the number of subscribers to support multiple network services on a common network infrastructure. Design, Implementation, and Analysis of Next Generation Optical Networks: Emerging Research and Opportunities is an essential reference source that discusses the next generation of high capacity passive optical access networks (PON) in terms of design, implementation, and analysis and offers a complete reference of technology solutions for next-generation optical networks. Featuring research on topics such as artificial intelligence, electromagnetic interface, and wireless communication, this book is ideally designed for researchers, engineers, scientists, and students interested in understanding, designing, and analyzing the next generation of optical networks.

Optical Access Networks and Advanced Photonics Technologies and Deployment Strategies

"This book presents a comprehensive overview of emerging optical access network solutions to efficiently meet the anticipated growth in bandwidth demand"--Provided by publisher.

Optical Access Networks and Advanced Photonics  Technologies and Deployment Strategies

Author: Chochliouros, Ioannis P.

Publisher: IGI Global

ISBN: 1605667080

Page: 380

View: 331

"This book presents a comprehensive overview of emerging optical access network solutions to efficiently meet the anticipated growth in bandwidth demand"--Provided by publisher.

Optical Networking in Telecommunication

This book has successfully dealt with all technology related issues like, how is an optical network different from existing networks, which network elements are required for optical networks, what applications do optical networks best suit, ...

Optical Networking in Telecommunication

Author: Santosh Mukherjee

Publisher:

ISBN: 9788184950045

Page: 240

View: 874

As networks face increasing bandwidth demand and diminishing fibre availability, network providers are moving towards a crucial milestone in network evolution: the optical network. This book has successfully dealt with all technology related issues like, how is an optical network different from existing networks, which network elements are required for optical networks, what applications do optical networks best suit, etc. The book explains the technologies, architectures, and market trends for emerging optical networks and is primarily designed for undergraduate and graduate students of Electronics & Telecommunications.Key Features Includes detailed discussion on topics like Wavelength Routing Plans, Optical Cross-Connect (OXC), Optical Fibre Capacity, Optical Power Measurements, Optical Transmitters & Receivers, SONET systems, etc. Separate chapter on markets for Optical Networks has been added Exhaustive coverage of Fibre Optic Communications and related technologies

Optical CDMA Networks

4. Goralski, W. (1998) ADSL and DSL Technologies. McGraw-Hill, USA. 5. Kramer, G. (2005) Ethernet passive optical network. McGraw-Hill, New York, USA. 6.

Optical CDMA Networks

Author: Hooshang Ghafouri-Shiraz

Publisher: John Wiley & Sons

ISBN: 1119942004

Page: 448

View: 760

This book focuses heavily on the principles, analysis and applications of code-division multiple-access (CDMA) techniques in optical communication systems and networks. In this book, the authors intimately discuss modern optical networks and their applications in current and emerging communication technologies, evaluating the quality, speed and number of supported services. In particular, principles and fundamentals of optical CDMA techniques from beginner to advanced levels are heavily covered. Furthermore, the authors concentrate on methods and techniques of various encoding and decoding schemes and their structures, as well as analysis of optical CDMA systems with various transceiver models including advanced multi-level incoherent and coherent modulations with the architecture of access/aggregation networks in mind. Moreover, authors examine intriguing topics of optical CDMA networking, compatibility with IP networks, and implementation of optical multi-rate multi-service CDMA networks. Key features: Expanded coverage of optical CDMA networks, starts from principles and fundamentals Comprehensive mathematical modelling and analysis from signal to system levels Addresses the applications of modern optical networking in the current and emerging communication technologies Greater focus on advanced optical multi-level incoherent and coherent modulations, spreading codes, and transceiver designs Detailed hardware specifications, system-level block diagrams, and network nodes’ functionalities This book appeals to researchers, practicing engineers, and advanced students. It is a practical resource for readers with an interest in optical communications and networks.

Optical and Wireless Convergence for 5G Networks

This book aims to provide an inclusive survey of 5G optical-wireless requirements, architecture developments, and technological solutions; in particular, this book: Offers new insights on the highly relevant topic of 5G optical-wireless ...

Optical and Wireless Convergence for 5G Networks

Author: Abdelgader M. Abdalla

Publisher: John Wiley & Sons

ISBN: 1119491584

Page: 352

View: 174

The mobile market has experienced unprecedented growth over the last few decades. Consumer trends have shifted towards mobile internet services supported by 3G and 4G networks worldwide. Inherent to existing networks are problems such as lack of spectrum, high energy consumption, and inter-cell interference. These limitations have led to the emergence of 5G technology. It is clear that any 5G system will integrate optical communications, which is already a mainstay of wide area networks. Using an optical core to route 5G data raises significant questions of how wireless and optical can coexist in synergy to provide smooth, end-to-end communication pathways. Optical and Wireless Convergence for 5G Networks explores new emerging technologies, concepts, and approaches for seamlessly integrating optical-wireless for 5G and beyond. Considering both fronthaul and backhaul perspectives, this timely book provides insights on managing an ecosystem of mixed and multiple access network communications focused on optical-wireless convergence. Topics include Fiber–Wireless (FiWi), Hybrid Fiber-Wireless (HFW), Visible Light Communication (VLC), 5G optical sensing technologies, approaches to real-time IoT applications, Tactile Internet, Fog Computing (FC), Network Functions Virtualization (NFV), Software-Defined Networking (SDN), and many others. This book aims to provide an inclusive survey of 5G optical-wireless requirements, architecture developments, and technological solutions.

Optical Network Design and Modeling

Optical Society of America (2015) 8. de Almeida Amazonas, J.R., Santos-Boada, G., Solé-Pareta, ... Emerging Optical Network Technologies, pp. 111–127.

Optical Network Design and Modeling

Author: Anna Tzanakaki

Publisher: Springer Nature

ISBN: 3030380858

Page: 661

View: 239

This book constitutes the refereed proceedings of the 23rd International IFIP conference on Optical Network Design and Modeling, ONDM 2019, held in Athens, Greece, in May 2019. The 39 revised full papers were carefully reviewed and selected from 87 submissions. The papers focus on cutting-edge research in established areas of optical networking as well as their adoption in support of a wide variety of new services and applications. This involves the most recent trends in networking including 5G and beyond, big data and network data analytics, cloud/edge computing, autonomic networking, artificial intelligence assisted networks, secure and resilient networks, that drive the need for increased capacity, efficiency, exibility and adaptability in the functions that the network can perform. In this context new disaggregated optical network architectures were discussed, exploiting and integrating novel multidimensional photonic technology solutions as well as adopting open hardware and software platforms relying on software defined networking (SDN), and network function virtualization (NFV) to allow support of new business models and opportunities.

Optical Communications in the 5G Era

Optical Communications in the 5G Era provides an up-to-date overview of the emerging optical communication technologies for 5G next-generation wireless networks.

Optical Communications in the 5G Era

Author: Xiang Liu

Publisher: Academic Press

ISBN: 9780128216279

Page: 350

View: 995

Optical Communications in the 5G Era provides an up-to-date overview of the emerging optical communication technologies for 5G next-generation wireless networks. It outlines the emerging applications of optical networks in future wireless networks, state-of-the-art optical communication technologies, and explores new R&D opportunities in the field of converged fixed-mobile networks. Optical Communications in the 5G Era is an ideal reference for university researchers, graduate students, and industry R&D engineers in optical communications, photonics, and mobile and wireless communications who need an understanding of modern optical communication technologies that are fundamental to the 5th-generation (5G) wireless network. Describes 5G wireless trends and technologies such as cloud radio access networks (C-RAN), massive multiple-input and multiple-output (MIMO), and coordinated multipoint (CoMP) Gives an insight into recent advances on the common public radio interface (CPRI), the Ethernet-based CPRI (eCPRI), and the next-generation fronthaul interface (NGFI) Presents X-haul technologies and how transport technologies can satisfy the mobile network needs Identifies promising applications of optical communication technologies in future 5G wireless networks Describes key optical communication technologies such as 100+Gb/s coherent transmission, low-cost direct-detection systems, and associated digital signal processing (DSP) techniques for high-throughput and low-latency wireless fronthaul and backhaul networks Gives various network architectures and designs of optical transport and access systems for better converged fiber/wireless networks Discusses emerging optical technologies such as optical sensing, optical ranging, optical face recognition, and optical signal processing

Towards an Optical Internet

A short look at the Table of Contents of this book tells us, in fact, that this year's conference program reflects the current state of the art precisely.

Towards an Optical Internet

Author: Admela Jukan

Publisher: Springer

ISBN: 0387354913

Page: 400

View: 500

In these exciting times of quotidianly progressing developments in communication techniques, where more than ever in the history of a technological progress, society's reliance on communication networks for medicine, education, data transfer, commerce, and many other endeavours dominates the human's everyday life, the optical networks are certainly one of the most promising and challenging networking options. Since their commercial arrival in the nineties, they have fundamentally changed the way of dealing with traffic engineering by removing bandwidth bottlenecks and eliminating delays. Today, after the revolutionary bandwidth expansion, the networking functionality migrates more and more to the optical layer, and the need to establish fast wavelength circuits and capacity-on-demand for the higher-layer networks, in particular data networks based on Internet Protocol (IP), has become one of the central networking issues for the new century. The unifying trends toward configurable all-optical network infrastructure open up a wide range of new network engineering and design choices dealing with networks' interoperability and common platforms for control and management. The Fifth Working Conference on Optical Network Design and Modelling, held in the Austrian capital Vienna, February 5-7, 2001, aims at presenting the most recent progress in optical communication techniques, new technologies, standardisation process, emerging markets and carriers. A short look at the Table of Contents of this book tells us, in fact, that this year's conference program reflects the current state of the art precisely.

Handbook of Fiber Optic Data Communication

This edition contains new material on transceiver form factors (QSFP, SFP +, XFP, X2), manufacturing standards, including JEDEC and RoHS, as well as the latest revisions to industry standards including 8G and 10G Fiber Channel, FICON, SONET ...

Handbook of Fiber Optic Data Communication

Author: Casimer DeCusatis

Publisher: Academic Press

ISBN: 9780080565033

Page: 800

View: 279

Handbook of Fiber Optic Data Communication, Third Edition provides a comprehensive, easy to use guide to the field of optical fiber data communications. Written by experts in the industry from major companies such as IBM, Cisco and Nortel, the Handbook is a key reference for optical fiber technology, networking, protocols, applications, manufacturing, and future directions. It includes chapters on all the major industry standards, written by the same experts who developed them. This edition contains new material on transceiver form factors (QSFP, SFP +, XFP, X2), manufacturing standards, including JEDEC and RoHS, as well as the latest revisions to industry standards including 8G and 10G Fiber Channel, FICON, SONET GFP/LCAS, and 10 Gigabit Ethernet. The book also contains new chapters on emerging technologies and leading edge applications such as silicon photonics, nanophotonics, parallel optical interconnects, specialty fiber cable types, and optical backplanes. Features include: New Case Studies on Voice/Data Convergence, Redesigning Mainframe I/O, National LambdaRail, and optical peer-to-peer networks Includes an expanded listing of references on the World Wide Web, plus hard-to-find references for international, homologation, and type approval requirements Quick reference tables of all the key optical network parameters and a glossary that defines hundreds of technical terms and acronyms Written for engineers by engineers, this Handbook will be an indispensable, hands-on reference for optical networks and equipment developers, designers, and installers, as well as for students studying optical fiber communications wanting an understanding of, and insight into, professional practice. New Case Studies on Voice/Data Convergence, Redesigning Mainframe I/O, National LambdaRail, and optical peer-to-peer networks Includes an expanded listing of references on the World Wide Web, plus hard-to-find references for international, homologation, and type approval requirements Quick reference tables of all the key optical network parameters and a glossary that defines hundreds of technical terms and acronyms

Optical Networking A Beginners Guide

If you're looking for in-depth information on the theories behind optical networking--as well as practical details on working with the technology--this book is your ideal resource.Learn the differences between optical and electrical signals ...

Optical Networking  A Beginners Guide

Author: Robert C. Elsenpeter

Publisher: Network Professional's Library

ISBN:

Page: 487

View: 677

Learn the basics of optical networking using this practical and easy-to-follow introductory guide. You'll get an overview of concepts behind the technology, as well as helpful information on Cisco, Nortel, and Juniper certifications. Also, a handy 16-page blueprint section offers additional visual instruction.

Reliable Network Architectures

With the increasing number of Internet users, connected devices, and high data rate applications, the future Internet traffic is expected to continue to grow rapidly.

Reliable Network Architectures

Author: Zhen Lu

Publisher:

ISBN:

Page:

View: 639

With the increasing number of Internet users, connected devices, and high data rate applications, the future Internet traffic is expected to continue to grow rapidly. Able to keep up with this exponential growth rate are fiber optics network technologies that leverage wavelength division multiplexing (WDM) to achieve multiple orthogonal channels in every fiber. Achievable transmission rates for each wavelength channel are also improving, reaching now 400Gbps and above commercially. While the demand for high network throughput is going to be met by the emerging and foreseeable optical transmission technologies, network vulnerability to outages remains a concern, especially accounting for the aggregate large data traffic volume that can be carried by a single optical fiber or switched by a single optical network node. Backbone optical networks in both metro and wide areas carry large volumes of traffic and even a single network element outage (e.g., a fiber cut, a site power outage, a port failure) can cause significant traffic disruption and loss, which in turn can adversely affect a large group of network users. Therefore, protection and restoration schemes such as pre-planned restoration, fast reroute (FRR), and SRLG (Shared-Risk Link Groups)-aware protection need to be implemented to achieve the much-needed network survivability level. Some of these mechanisms have been vii used extensively in the past, but they are not able to provide high degrees of reliability that can prevent the massive service outages that have been experienced in some commercial networks in recent years, when two or more unexpected and concurrent events caused severe disruptions in the network. In this dissertation, a number of advanced protection and restoration schemes, along with their related optimization algorithms, are discussed and investigated, focusing on three optical network architectures -- GMPLS (Generalized Multiprotocol Label Switching) enabled WDM network, multilayer optical network, and virtual optical network. As discussed in the dissertation these advanced schemes and related optimization algorithms achieve high network reachability and survivability even in the presence of multiple failure events affecting the network. By utilizing these schemes and algorithms, optical networks can be designed and managed to achieve high successful-restoration rates, fast restoration completion time, high network resource utilization, and tolerances to one or more outages.

IP over WDM

This is the first book to focus on IP over WDM optical networks.

IP over WDM

Author: Kevin H. Liu

Publisher: John Wiley & Sons

ISBN: 0470855290

Page: 416

View: 489

This is the first book to focus on IP over WDM optical networks. It not only summarizes the fundamental mechanisms and the recent development and deployment of WDM optical networks but it also details both the network and the software architectures needed to implement WDM enabled optical networks designed to transport IP traffic. The next generation network employing IP over optical networks is quickly emerging not only in the backbone but also in metro and access networks. Fiber optics revolutionizes the telecom and networking industry by offering enormous network capacity to sustain the next generation Internet growth. IP provides the only convergence layer in a global and ubiquitous Internet. So integrating IP and WDM to transport IP traffic over WDM enabled optical networks efficiently and effectively is an urgent yet important task. * Covers hot areas like traffic engineering, MPLS, peer-to-peer computing, IPv6. * Comprehensive overview of history, background and research. * Presents all requirements for a WDM optical network (enabling technologies, optical components, software architecture, management, etc.). * Performance studies and descriptions of experimental WDM optical networks guarantee the practical approach of the book. Technical engineers and network practitioners, designers and analysts, network managers and technical management personnel as well as first year graduate students or senior undergraduate students majoring in networking and/or network control and management will all find this indispensable.

Optical Fiber Telecommunications VIB

Present-day networks are being challenged by dramatic increases in data rate demands of emerging applications.

Optical Fiber Telecommunications VIB

Author: Vincent W.S. Chan

Publisher: Elsevier Inc. Chapters

ISBN: 0128060913

Page: 1148

View: 723

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.

Broadband Optical Access Networks and Fiber to the Home

Broadband Optical Access Networks and Fiber-to-the-Home will be an invaluable resource for engineers in research and development, network planners, business managers, consultants as well as analysts and educators for a better understanding ...

Broadband Optical Access Networks and Fiber to the Home

Author: Chinlon Lin

Publisher: John Wiley & Sons

ISBN: 0470094796

Page: 334

View: 916

Broadband Optical Access and Fiber-to-the-Home (FTTH) will provide the ultimate broadband service capabilities. Compared with the currently well-deployed broadband access technologies of ADSL (Asymmetric Digital Subscriber Line) and Cable Modems, optical broadband access with Fiber-to-the-User’s home will cater for much higher speed access for new services. Broadband Optical Access Networks and Fiber-to-the-Home presents a comprehensive technical overview of key technologies and deployment strategies for optical broadband access networks and emerging new broadband services. The authors discuss network design considerations, new services, deployment trends and operational experiences, while explaining the current situation and providing insights into future broadband access technologies and services. Broadband Optical Access Networks and Fiber-to-the-Home: Offers a comprehensive, up-to-date introduction to new developments in broadband access network technologies and services. Examines the impact of research and development in photonics technologies on broadband access and FTTH. Covers ADSL, VDSL with FTTC (Fiber-to-the-Curb), Cable Modem over HFC (Hybrid-Fiber Coax) and Gigabit Ethernet. Discusses the roles of Broadband Wireless LAN and integrated FTTH/Wireless Broadband Access as well as Broadband Home Networks. Provides a global view of broadband network development, presenting different technical and system deployment approaches and strategic considerations for comparison. Gives insight into the worldwide broadband competition and the future of this technology. Broadband Optical Access Networks and Fiber-to-the-Home will be an invaluable resource for engineers in research and development, network planners, business managers, consultants as well as analysts and educators for a better understanding of the future of broadband in the field of telecommunications, data communications, and broadband multimedia service industries.

Next Generation Optical Networks

Next Generation Optical Networks gives both electrical and data networking engineers essential information for building these networks.

Next Generation Optical Networks

Author: Peter Tomsu

Publisher: Prentice Hall

ISBN:

Page: 320

View: 841

TomorrowÕs networks will integrate optical transmission and IP to deliver unprecedented performance and manageability. Next Generation Optical Networks gives both electrical and data networking engineers essential information for building these networks. It reviews emerging standards such as MPLS and MPLmS, key optical technologies, and critical applications for enterprise, ISP, and carrier environments.

Optical Networking

In this book, the real-world applications driving optical networking deployments are explored. You'll get a detailed look inside the markets for fiber, bandwidth supply and demand, and optical networking technology.

Optical Networking

Author: Debra Cameron

Publisher: John Wiley & Sons Incorporated

ISBN:

Page: 217

View: 925

A strategic guide to the practical business applications of optical networking technologies Optical Networking A Wiley Tech Brief Optical networks are spreading outward from Internet backbones to cities to corporations and even to the home. Cities are in a strategic position to create a leading-edge optical infrastructure that will drive economic growth. Optical technologies can cost-effectively meet corporate bandwidth needs today and tomorrow, from optical Internet connections offering bandwidth on demand to fiber on the LAN. Fiber to the home can provide true broadband connectivity for telecommuters as well as converged multimedia offerings for consumers. The ever-expanding need for bandwidth can only be met by optical networks and their phenomenal data capacity. In this book, the real-world applications driving optical networking deployments are explored. You'll get a detailed look inside the markets for fiber, bandwidth supply and demand, and optical networking technology. Both traditional architectures, such as SONET, and emerging paradigms, such as IP over DWDM and Gigabit Ethernet, are examined. This book provides practical information, insight, and case studies about the business benefits and broad range of optical networking technologies and applications available today, including: * Optical internets that run IP directly over fiber without intervening layers of ATM and SONET * Municipal optical networks and their ability to transform local economies * Corporate optical networking deployments, from LAN to WAN to Internet connections * Gigabit Ethernet and bandwidth on demand * Fiber to the home-and why pseudobroadband alternatives such as DSL and cable modems are inadequate * Why wireless is not an alternative to fiber Wiley Tech Briefs Focused on the needs of the corporate IT and business manager, the Tech Briefs series provides in-depth information on new or emerging technologies, solutions, and vendor offerings available in the marketplace. With their accessible approach, these books will help you get quickly up-to-speed on a topic so that you can effectively compete, grow, and better serve your customers. Wiley Computer Publishing Timely. Practical. Reliable. Visit our Web site at www.wiley.com/compbooks/

Wavelength Converters in Optical Networks

Motivation for the present work and the organization of thesis has been outlined.

Wavelength Converters in Optical Networks

Author: K. R. Venugopal

Publisher: I. K. International Pvt Ltd

ISBN: 9788189866280

Page: 184

View: 711

The first generation networks built before the emergence of fiber optics and the second generation networks which used fiber as a replacement for copper links in Local Area network (LAN), Metropolitan Area Network (MAN) and Wide Area Network (WAN) are not adequate to meet the emerging integrated demands of the communication applications. Huge bandwidth must be provided to support applications such as super-computer interconnect, videoconferencing, etc., co-existing with smaller bandwidth requirements of data, audio, and many other applications for thousands of end-users. Wavelength Converters in Optical Networks deals with the third generation networks that use Wavelength Division Multiplexing (WDM), wavelength routed optical networking technology. This technology can efficiently utilize the enormous bandwidth of the optical fiber and has been able to meet the emerging integrated demands of the communication applications KEY FEATURES * WDMA network architecture models have been presented * Literature has been supported and explained with diagrams and tables wherever required, for clear understanding of students. * Simulation studies in the 12-node ring network, 28-node USA long hand network, 14-node NSFNET, 19-node European Optical Network (EON), 30-node INET network and 52-node arbitrary mesh network have been presented. * Motivation for the present work and the organization of thesis has been outlined. * Research activity in network topology recon figuration, issues in fault tolerances, and the objectives of various test beds in progress have been presented * Last chapter presents the summary and contribution of the work