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dwdm
(126 results)-
White Papers
Recent Progress on Planar Lightwave Circuit Technology for Optical Communication
Nov 2009
Silica waveguide Planar Lightwave Circuit (PLC) technology is very useful for fabricating compact and high performance optical devices for optical communication. Wavelength multiplexers and...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Research on Capacity Planning of WDM Networks Using Improved Ant Colony Algorithm
Nov 2009
A cost-effective capacity planning method of WDM networks is proposed for increase of traffic load. An improved cost-based ant colony algorithm is presented from pheromone increase and update...
Provided by Association for Computing Machinery
-
White Papers
A Novel Survivable Traffic Grooming Algorithm With Inter-Layer Sharing in IP/MPLS-Over-WDM Mesh Networks
Nov 2009
The authors propose a Mixed Sharing Auxiliary Graph (MSAG) for dynamic traffic grooming in heterogeneous WDM mesh networks. Based on MSAG model, a novel heuristic named BLSW-ILMS (Backup LSP...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Lightpath Routing Considering Differentiated Physical Layer Constraints in Transparent WDM Networks
Dec 2009
Wavelength Division Multiplexing (WDM) technology is considered to be the ultimate answer to the rapidly growing capacity demand of next generation networks. Many Routing and Wavelength Assignment...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Novel Iterative P-cycle Configure Model in WDM Intelligent Optical Network
Nov 2009
In this paper, a p-cycle generation algorithm is proposed that can protect service of static traffic model in WDM network. As the basic p-cycle sets calculated by algorithm such as the Straddle...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Orthogonal Wavelength-Division-Multiplexing Using SSFBGs in Passive Optical Networks
Nov 2009
The authors propose a novel scheme of orthogonal Wavelength-Division-Multiplexing (WDM) using SuperStructure Fiber Bragg Gratings (SSFBGs) as a square pulse shaper in Passive Optical Networks...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
A Novel Routing and Wavelength Assignment Algorithm Based on Colored Multigraph Model in WDM Networks
Nov 2009
Wavelength Division Multiplexing (WDM) is an effective technique to make use of the large amount of bandwidth in optical fibers to meet the bandwidth requirement of applications. It is generally...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
A Novel Highly Reliable WDM-PON System
Nov 2009
The authors propose and experimentally investigate a highly reliable WDM-PON system. The proposed system adopts the colorless solution. It can detect the failure of the feeder fiber by the polling...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
An Adaptive Routing Algorithm for Flooding Performance Improving in GMPLS Based WDM Networks
Nov 2009
In WDM networks, when a session request is received by the network, the problem of establishing light-paths by routing and assigning a wavelength to this connection session is called the Routing...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Serial 100 Gbit/s PM-RZ-DQPSK Transmission in the Presence of Perturbations From Lower Data Rate Neighboring Channels
Dec 2009
This paper investigates serial 100 Gbit/s PM-RZ-DQPSK transmission in the presence of perturbations from neighboring 10 Gbit/s NRZ, 40 Gbit/s RZ-DPSK, and 40 Gbit/s RZ-DQPSK DWDM channels. It...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Quaternary Modulation Formats for 100-Gbps Optical Links
Dec 2009
The demand for 100 Gb/s optical links is rapidly spreading across all levels of the optical networking infrastructure. Many of the first deployments will be in the Local Area Network (LAN) and...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Application and Technical Issues of WDM-PON
Dec 2009
This paper reviews recent research activities on the applications and technical issues of WDM-PON. First, the authors describe two candidate applications of WDM-PON: one is a long-reach WDM-PON...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Simple Technique for Measuring Raman Gain Efficiency Spectrum Distribution in Single-Mode Fiber
Dec 2009
Simple technique is proposed for measuring distributed Raman gain efficiency spectrum in a single-mode fiber based on the bidirectional OTDR. The Raman gain efficiency spectra are successfully...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
32Tb/s DWDM Transmission System
Dec 2009
The authors successfully generated 114-Gb/s PDM-8QAM optical signal by novel scheme. Intradyne coherent detection of PDM-8QAM optical signal with robust blind polarization de-multiplexing has been...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
A Novel Proposal for DWDM Demultiplexer Design Using Resonance Cavity in Photonic Crystal Structure
Dec 2009
The authors propose an ultra compact structure for Dense Wavelength Division Multiplexing (DWDM) systems using resonance cavity in Photonic Crystal (PC) structure. To the best of the authors'...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Eight-Channel Wavelength Division Demultiplexer Using Multimode Interference
Dec 2009
The authors present a new design of wavelength division demultiplexer based on self-imaging principle in the MultiMode Interference (MMI) structure. They simulated an 8-channel wavelength...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Distributed Control Routing Algorithms for Rearrangeably Nonblocking Optical Banyan Networks
Dec 2009
The ubiquitous presence of the multimedia applications and the tremendous popularity of the World Wide Web have dramatically increased the amount of traffic over the Internet, which creates the...
Provided by Academy Publisher
-
White Papers
Dynamic Energy Management for IP-Over-WDM Networks
Jun 2011
This paper proposes a new energy management framework for an IP over WDM network. A key constraint of the authors' architecture is to maintain the logical IP topology while saving energy by...
Provided by University of London
-
White Papers
Application of Attractor Selection to Adaptive Virtual Network Topology Control
Nov 2008
The growth of the Internet and emerging application layer technologies causes numerous changes in network environments. Therefore, it becomes important to achieve adaptive methods of controlling...
Provided by ICST
-
White Papers
Robust Virtual Network Topology Control Based on Attractor Selection
Jan 2009
The growth of the Internet and emerging application layer technologies causes numerous changes in network environments. Therefore, it becomes important to achieve robust methods of controlling...
Provided by Osaka University
-
White Papers
Designing Different Models of Robust IP/MPLS Over DWDM Networks
Nov 2011
Both IP/MPLS and DWDM layers can provide various resilient schemes to protect traffic from disruptions due to network failures. At the same time, both technologies provide the ability to realize...
Provided by International Journal of Computer Science and Telecommunications
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White Papers
Diverse Lightpath Protection Against Correlated and Probabilistic Failures in Multi-Domain Optical Networks
Mar 2012
This paper proposes a distributed lightpath protection scheme for diverse routing in multi-domain optical networks with correlated and probabilistic failures. This novel solution jointly considers...
Provided by University of New Mexico
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White Papers
Multi-Domain DWDM Network Provisioning for Correlated Failures
Jun 2011
Network survivability is a key area and many schemes have been studied for optical Dense Wavelength Division Multiplexing (DWDM) networks. These include pre-provisioned protection strategies for...
Provided by University of New Mexico
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White Papers
Post-Fault Restoration in Multi-Domain Networks With Multiple Failures
Oct 2010
Multi-domain networking is an important focus area and crankback signaling strategies offer much potential for post-fault recovery. However, most studies in this space have not addressed...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Provisioning for Probabilistic Failures in Multi-Domain DWDM Networks
Jun 2011
This paper addresses multi-domain light-path provisioning within the context of correlated multi-failure events. The paper jointly incorporates both risk minimization and traffic engineering...
Provided by University of New Mexico
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White Papers
A Review on Placement of Wavelength Converters in WDM P-Cycle Network
May 2011
The p-cycles can be described as preconfigured closed protection paths in a mesh network. Like rings, the protection path is preconnected in advance of any failure and protection capacity is very...
Provided by International Journal of Advances in Engineering & Technology (IJAET)
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White Papers
A Review of Time Domain Switching Optical Burst Switched Networks
Feb 2012
Optical networks are in continuous demand for their large bandwidth availability. Many optical switching paradigms have been proposed. Among these paradigms, three of them have received more...
Provided by The Second International Conference on Communications and Information Technology
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White Papers
Enabling Large Data Transfers on Dynamic, Very High-Speed Network Infrastructures
Jan 2012
High-speed networks are being built using the most up-to-date networking technologies such as optical fibers with Dense Wavelength Multiplexing (DWDM) in order to meet the performance constraints...
Provided by INRIA
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White Papers
Performance Analysis of Receivers in WDM for Extended Reach Passive Optical Networks
Mar 2012
In this paper, the authors have investigated and analyzed the performance of receivers for different classes of WDM PON system for next generation Passive Optical Networks. The performance is...
Provided by International Journal of Computer Science Issues
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White Papers
Transparent Transmission of a Secure Time Domain Spectral Phase Encoding/Decoding DPSK - OCDM Signal Over a DWDM Network
May 2011
The authors propose and experimentally demonstrate a transparent Optical-Code-Division Multiplexing (OCDM) overlay public Dense Wavelength-Division Multiplexing (DWDM) network architecture enabled...
Provided by Optical Society of America
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White Papers
Backup Reprovisioning After Shared Risk Link Group (SRLG) Failures in WDM Mesh Networks
Aug 2010
In this paper, the authors study the impact of Shared Risk Link Group (SRLG) failures on shared path protection by examining the percentage of connections that are vulnerable after SRLG failures,...
Provided by Optical Society of America
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White Papers
Towards a Bufferless Optical Internet
Feb 2009
This paper investigates the relationship between buffer size and long-term average TCP performance in Dense Wavelength Division Multiplexing (DWDM) networks. By investigating TCP NewReno, the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Dynamic Distributed Spectrum Allocation in GMPLS Controlled Elastic Optical Networks
Apr 2011
The authors propose and experimentally evaluate a distributed spectrum assignment approach for GMPLS-controlled elastic networks based on collecting the frequency slot availability information...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Enhanced Backwards Recursive Path Computation for Multi-Area Wavelength Switched Optical Networks Under Wavelength Continuity Constraint
Jul 2009
In the context of the future Internet, all optical wavelength switched optical networks will play an important role in either evolutionary or revolutionary design paradigms. In any paradigm, Dense...
Provided by Optical Society of America
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Whitepapers
Unified GMPLS-Based Control of Carrier-Grade Ethernet Over DWDM
May 2009
As the current networks run into bandwidth scalability limits, network carriers are looking for new technology options in order to provide more bandwidth as well as to improve their existing...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
All-Optical Clock Recovery of 20 Gbit/s NRZ-DPSK Signals Using Polarization-Maintaining Fiber Loop Mirror Filter and Semiconductor Optical Amplifier Fiber Ring Laser
Feb 2009
Ultra-Dense Wavelength Division Multiplexing (UDWDM) concept originates in long-haul fiber-optic communications, it is also expected to be a key enabling technology for future massively parallel...
Provided by Reed Elsevier
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Whitepapers
High Performance Efficiency of Distributed Optical Fiber Raman Amplifiers for Different Pumping Configurations in Different Fiber Cable Schemes
Feb 2012
Fiber Raman Amplifiers (FRAs) are attractive for Ultra Wide Dense Wavelength Division Multiplexing (UW-DWDM) transmission systems due to their advantages of broad amplification bandwidth and...
Provided by International Journal of Computer Science and Network Security
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Whitepapers
Study of Re-Provisioning Mechanism for Dynamic Traffic in WDM Optical Networks
Feb 2008
In centralized-controlled WDM network, the traffic request arrived at the control node will be blocked if the lightpath is failed to be established, and the blocked request will not be issued...
Provided by Vanung University
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Whitepapers
Cost-Effective Transition to 40 Gb/s Line Rate Using the Existing 10 Gb/s-Based DWDM Infrastructure
Apr 2008
In this paper, the authors propose and demonstrate a cost-effective technique to upgrade the capacity of Dense Wavelength Division Multiplexing (DWDM) networks to a 40 Gb/s line rate using the...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
A Discrete-Time Polynomial Model of Single Channel Long-Haul Fiber-Optic Communication Systems
Apr 2011
To mitigate various physical impairments of long-haul Dense Wavelength Division Multiplexing (DWDM) systems and exploit their system capacity, there is a need to develop a two-dimensional (time...
Provided by Institute of Electrical & Electronic Engineers
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White Papers
DWDM Optical Supervisory Channel by Manchester Code on FPGA
Dec 2010
The next generation optical Wavelength Division Multiplex (WDM) network will transport a stupendous aggregate data rate that consists of all existing types of payload, synchronous and...
Provided by Islamic Azad University
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White Papers
End-to-End DWDM Optical Link Power-Control Via a Stackelberg Revenue-Maximizing Model
Aug 2008
This paper deals with a Stackelberg formulation for the power control problem in optical networks. The new model adds an extra dimension to the recent OSNR game model and gives flexibility in...
Provided by John Wiley & Sons
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White Papers
Routing Framework for All-Optical DWDM Metro and Long-Haul Transport Networks With Sparse Wavelength Conversion Capabilities
Oct 2007
In this paper, the authors propose a novel routing framework for all-optical DWDM transport networks with sparse wavelength conversion capabilities. The routing framework presented in this paper...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Protection and Restoration From Link Failures in DWDM Networks: A Cross-Layer Study
Feb 2008
Protection against failure in high bandwidth optical networks can prevent significant potential losses of data but at the same time it requires a considerable fraction of the network resources to...
Provided by George Washington University
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White Papers
10 × 10 Gb/s DWDM Transmission Through 2.2-Km Multimode Fiber Using Adaptive Optics
Aug 2007
Transmitter-based adaptive optics and receiver-based single-mode filtering are combined to compensate modal dispersion in MultiMode Fiber (MMF). A liquid-crystal spatial light modulator controls...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Survivable Routing of Mesh Topologies in IP-Over-WDM Networks by Recursive Graph Contraction
Jun 2007
Failure restoration at the IP layer in IP-over-WDM networks requires to map the IP topology on the WDM topology in such a way that a failure at the WDM layer leaves the IP topology connected. Such...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Study of IP Over WDM Networks Using MPLS System
Aug 2010
Though enormous improvement has occurred in the field of transmission media layer for which gigantic amount of data can be transferred but there is bottleneck problem at the upper layer protocol...
Provided by AICIT
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White Papers
Network Survivability for a Regular WDM Optical Network From Double-Link Failures Using Greedy Algorithm
May 2009
Network survivability is an important requirement in high-speed optical networks. The survivability of these networks from the failure of a single component such as a link or a node needs some...
Provided by Academy Publisher
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White Papers
A Decomposition Mechanism for Scalable Optical Interconnection Networks
Jan 2010
This paper proposes a formal decomposition mechanism for Single-hop WDM all-Optical Interconnection network for Scalable Multiprocessor systems. Future real-time applications requiring massively...
Provided by Texas A&M University
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White Papers
Clustering Methods for Hierarchical Traffic Grooming in Large-Scale Mesh WDM Networks
Aug 2010
This paper considers a hierarchical approach for traffic grooming in large multiwavelength networks of a general topology. Inspired by similar concepts in the airline industry, the author...
Provided by Optical Society of America
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White Papers
High-Bit-Rate Dense SS-WDM PON Using SOA-Based Noise Reduction With a Novel Balanced Detection
Nov 2009
The major drawback of incoherent Broadband Sources (BBSs) is their inherent intensity noise. Semiconductor Optical Amplifiers (SOAs) can be exploited at the transmitter to mitigate this noise....
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Comparison of Static and Dynamic WDM Networks in Terms of Energy Consumption
Jan 2010
Currently, telecommunication networks have been reported to account for 1-10% of the world's energy consumption. Given the ever increasing demand for Internet traffic, this figure is expected to...
Provided by Optical Society of America
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White Papers
Resource Planning for Dynamic Traffic Grooming in WDM Optical Networks
May 2010
Due to large bandwidth and high speed data requirement, the present means of communication needs constant updates. Wavelength Division Multiplexing (WDM) technology is very promise to meet the...
Provided by Pondicherry University
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White Papers
Performance Analysis of DWDM
Aug 2008
Dense Wavelength Division Multiplexing (DWDM) is a key component of the world's communications infrastructure. The tremendous growth in telecommunications services is possible today in part...
Provided by JATIT
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White Papers
CAPEX-Aware Design of Survivable DWDM Mesh Networks
Jun 2009
This paper reviews the basic architecture and component costs of opaque, transparent, and semi-transparent DWDM networks and looks at the network design problem from a Capital Expenditure (CAPEX)...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
IP Over DWDM: Empower Your Next-Generation Optical Network
Apr 2010
Cisco uniquely offers routing systems as well as DWDM transport with an integrated IPoDWDM solution. With the Cisco Transport Controller and the Cisco Transport Manager, both the Cisco CRS-1 and...
Provided by Cisco Systems
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White Papers
Cisco 40-Gbps DWDM Solutions: Boost Capacity and Flexibility the Smart Way
Apr 2010
The Exabyte Era is upon us. Cisco research indicates that the total volume of worldwide IP traffic is doubling every two years. By 2011, the world's IP networks will transport 29 exabytes of...
Provided by Cisco Systems
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White Papers
Network Topology Effect on QoS Delivering in Survivable DWDM Optical Networks
Jan 2009
The Quality of Service (QoS) is an important and considerable issue in designing survivable Dense Wavelength Division Multiplexing (DWDM) backbones for IP networks. This paper investigates the...
Provided by Institute of Biocybernetics and Biomedical Engineering
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White Papers
40-Gb/s Dense Wavelength Division Multiplexing Transmission System
Oct 2009
Fujitsu Telecom Networks develops and supplies optical transmission systems for domestic telecommunications carriers. For Japanese telecommunications carriers, it has recently developed the...
Provided by Fujitsu
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White Papers
DWDM-RAM: Enabling Grid Services With Dynamic Optical Networks
Jul 2009
Advances in Grid technology enable the deployment of data-intensive distributed applications, which require moving Terabytes or even Petabytes of data between data banks. The current underlying...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Open Photonics DWDM Systems Deployment Within the CESNET2 Network, With Emphasis to Single Fibre Bidirectional Operation
Dec 2008
This paper describes an experience with the deployment of DWDM system, based on open photonic devices family called CzechLight, within the CESNET2 network optical infrastructure in 2008. Emphasis...
Provided by CESNET
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White Papers
A Novel Block Turbo Code for High-Speed Long-Haul DWDM Optical Communication Systems
Mar 2008
The Forward Error Correction (FEC) code can effectively correct the error information that has arisen in the optical communication channel, so modern Dense Wavelength Division Multiplexing (DWDM)...
Provided by Reed Elsevier
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White Papers
Recent Trends in 100G Module and Subsystem Development for Long Haul DWDM Applications
May 2009
100G long haul DWDM transmission has been an area of intense research and development over the past several years, with commercial system availability generally expected within the next couple...
Provided by Opnext
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White Papers
DWDM-RAM: An Architecture for Data Intensive Services Enabled by Next Generation Dynamic Optical Networks
Jul 2009
An architecture is proposed for data-intensive services enabled by next generation dynamic optical networks. The architecture supports new data communication services that allow for coordinating...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Measurements on Passive Tunable Optical Filters for DWDM
Apr 2009
Measurements on a passive optical fibre tunable filter are presented. The device is based on a loop mirror in a ring resonator. The loop mirror allows tuning by changing the coupling coefficient...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Architecture to Integrate Multiple PONs With Long Reach DWDM Backhaul
Feb 2009
This paper demonstrates the feasibility of an architecture that consolidates a number of deployed Passive Optical Network (PON) infrastructures into a long-reach, high-split ratio system which...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Point-to-Point DWDM System Design and Simulation
Aug 2009
As for the problems of complexity and long cycle in the DWDM design, part of problems needed to be considered in DWDM system design were analyzed. An optimized point-to-point DWDM transmission...
Provided by Academy Publisher
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White Papers
40 Gbps Communication Channels Test Over the CESNET2 DWDM Optical Transmission Network
Jun 2009
CESNET Association operates the national DWDM and IP/MPLS network (CESNET2) covering multiple regions in the Czech Republic. The current CESNET2 network is built around a DWDM core providing 10...
Provided by CESNET
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White Papers
Integrated DWDM and MIMO-OFDM System for 4G High Capacity Mobile Communication
Jan 2010
Dense Wavelength-Division Multiplexing (DWDM) technique is a very promising data transmission technology for utilizing the capacity of the fiber. By DWDM, multiple signals (video, audio, data etc)...
Provided by Computer Science Journals
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White Papers
The Multiple Path Protection of DWDM Backbone Optical Networks
Apr 2009
Primary transmission protection technology is based on the characteristics of SONET/SDH protection mechanism which provides two fiber path rings. A serious problem may arise in the architecture...
Provided by National Kaohsiung University of Applied Sciences
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White Papers
OTN Interfaces for IP Over DWDM: IP-Optical Integration for Managing Wavelengths in Routers
Apr 2010
Traffic growth across core networks has proven to be a major driver for IP-optical integration. As time-division multiplexing (TDM)-based framing at Layer 2 has been discarded in favor of simpler...
Provided by Juniper Networks
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White Papers
Ultimate Spectral Efficiency Limits in DWDM Systems
Jul 2008
The overall capacity (b/s) of a DWDM transmission system is governed by the available bandwidth (Hz) and by the achievable spectral efficiency (b/s/Hz). Ultimate limits to the spectral efficiency...
Provided by University of California
-
White Papers
A Network Optimization Model for Multi-Layer IP/MPLS Over OTN/DWDM Networks
Oct 2009
The operational model for large Internet service providers is moving to a multi-layer architecture consisting of IP/MPLS coupled with OTN/DWDM. While there has been significant work on multi-layer...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Distributed Grooming in Multi-Domain IP/MPLS-DWDM Networks
Apr 2009
This paper studies distributed multi-domain, multilayer provisioning (grooming) in IP/MPLS-DWDM networks. Although many multi-domain studies have emerged over the years, these have primarily...
Provided by University of New Mexico
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White Papers
Inter-Domain Routing Scalability in Optical DWDM Networks
Mar 2008
Recent studies on inter-domain DWDM networks have focused on topology abstraction for state summarization, i.e., transforming a physical topology to a virtual mesh, tree, or star network. Although...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Routing Scalability in Multi-Domain DWDM Networks
Sep 2008
This paper studies routing scalability in multi domain DWDM networks. Although inter-domain provisioning has been well studied for packet/cell-switching networks, the wavelength dimension (along...
Provided by Springer Science+Business Media
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White Papers
Blocking Probabilities in WDM Switching Networks Using Overflow Analysis Method
Nov 2008
Wavelength Division Multiplexed switching networks are considered as an important candidate for the future transport networks. As the size of network increases conventional methods used in...
Provided by Bahria University
-
White Papers
WDM/CWDM/DWDM: Segmentation Primer-Maximizing Capacity for Revenue
Jun 2008
Node segmentation provides a good tool for cable operators to increase targeted ser1ces, such as EOD, Internet data, and telephony. In many cases, cable operators have limited fibers and/or they...
Provided by Motorola
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Case Studies
JANET Network Provides Path to Collaborative Learning
Oct 2008
JANET (UK) is the company that manages JANET, the UK's education and research network, providing connectivity services for 18 million users at universities, colleges, research councils and...
Provided by Verizon
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White Papers
Switching and Traffic Grooming in WDM Networks
Jan 2008
This paper considers the role of switching in minimizing the number of electronic ports (e.g., SONET ADMs) in an optical network that carries sub-wavelength traffic. Providing nodes with the...
Provided by Massachusetts Institute of Technology
-
White Papers
Recent Progress on Planar Lightwave Circuit Technology for Optical Communication
Nov 2009
Silica waveguide Planar Lightwave Circuit (PLC) technology is very useful for fabricating compact and high performance optical devices for optical communication. Wavelength multiplexers and...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Research on Capacity Planning of WDM Networks Using Improved Ant Colony Algorithm
Nov 2009
A cost-effective capacity planning method of WDM networks is proposed for increase of traffic load. An improved cost-based ant colony algorithm is presented from pheromone increase and update...
Provided by Association for Computing Machinery
-
White Papers
A Novel Survivable Traffic Grooming Algorithm With Inter-Layer Sharing in IP/MPLS-Over-WDM Mesh Networks
Nov 2009
The authors propose a Mixed Sharing Auxiliary Graph (MSAG) for dynamic traffic grooming in heterogeneous WDM mesh networks. Based on MSAG model, a novel heuristic named BLSW-ILMS (Backup LSP...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Lightpath Routing Considering Differentiated Physical Layer Constraints in Transparent WDM Networks
Dec 2009
Wavelength Division Multiplexing (WDM) technology is considered to be the ultimate answer to the rapidly growing capacity demand of next generation networks. Many Routing and Wavelength Assignment...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Novel Iterative P-cycle Configure Model in WDM Intelligent Optical Network
Nov 2009
In this paper, a p-cycle generation algorithm is proposed that can protect service of static traffic model in WDM network. As the basic p-cycle sets calculated by algorithm such as the Straddle...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Orthogonal Wavelength-Division-Multiplexing Using SSFBGs in Passive Optical Networks
Nov 2009
The authors propose a novel scheme of orthogonal Wavelength-Division-Multiplexing (WDM) using SuperStructure Fiber Bragg Gratings (SSFBGs) as a square pulse shaper in Passive Optical Networks...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
A Novel Routing and Wavelength Assignment Algorithm Based on Colored Multigraph Model in WDM Networks
Nov 2009
Wavelength Division Multiplexing (WDM) is an effective technique to make use of the large amount of bandwidth in optical fibers to meet the bandwidth requirement of applications. It is generally...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
A Novel Highly Reliable WDM-PON System
Nov 2009
The authors propose and experimentally investigate a highly reliable WDM-PON system. The proposed system adopts the colorless solution. It can detect the failure of the feeder fiber by the polling...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
An Adaptive Routing Algorithm for Flooding Performance Improving in GMPLS Based WDM Networks
Nov 2009
In WDM networks, when a session request is received by the network, the problem of establishing light-paths by routing and assigning a wavelength to this connection session is called the Routing...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Serial 100 Gbit/s PM-RZ-DQPSK Transmission in the Presence of Perturbations From Lower Data Rate Neighboring Channels
Dec 2009
This paper investigates serial 100 Gbit/s PM-RZ-DQPSK transmission in the presence of perturbations from neighboring 10 Gbit/s NRZ, 40 Gbit/s RZ-DPSK, and 40 Gbit/s RZ-DQPSK DWDM channels. It...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Quaternary Modulation Formats for 100-Gbps Optical Links
Dec 2009
The demand for 100 Gb/s optical links is rapidly spreading across all levels of the optical networking infrastructure. Many of the first deployments will be in the Local Area Network (LAN) and...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Application and Technical Issues of WDM-PON
Dec 2009
This paper reviews recent research activities on the applications and technical issues of WDM-PON. First, the authors describe two candidate applications of WDM-PON: one is a long-reach WDM-PON...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Simple Technique for Measuring Raman Gain Efficiency Spectrum Distribution in Single-Mode Fiber
Dec 2009
Simple technique is proposed for measuring distributed Raman gain efficiency spectrum in a single-mode fiber based on the bidirectional OTDR. The Raman gain efficiency spectra are successfully...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
32Tb/s DWDM Transmission System
Dec 2009
The authors successfully generated 114-Gb/s PDM-8QAM optical signal by novel scheme. Intradyne coherent detection of PDM-8QAM optical signal with robust blind polarization de-multiplexing has been...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
A Novel Proposal for DWDM Demultiplexer Design Using Resonance Cavity in Photonic Crystal Structure
Dec 2009
The authors propose an ultra compact structure for Dense Wavelength Division Multiplexing (DWDM) systems using resonance cavity in Photonic Crystal (PC) structure. To the best of the authors'...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Eight-Channel Wavelength Division Demultiplexer Using Multimode Interference
Dec 2009
The authors present a new design of wavelength division demultiplexer based on self-imaging principle in the MultiMode Interference (MMI) structure. They simulated an 8-channel wavelength...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Distributed Control Routing Algorithms for Rearrangeably Nonblocking Optical Banyan Networks
Dec 2009
The ubiquitous presence of the multimedia applications and the tremendous popularity of the World Wide Web have dramatically increased the amount of traffic over the Internet, which creates the...
Provided by Academy Publisher
-
White Papers
Dynamic Energy Management for IP-Over-WDM Networks
Jun 2011
This paper proposes a new energy management framework for an IP over WDM network. A key constraint of the authors' architecture is to maintain the logical IP topology while saving energy by...
Provided by University of London
-
White Papers
Application of Attractor Selection to Adaptive Virtual Network Topology Control
Nov 2008
The growth of the Internet and emerging application layer technologies causes numerous changes in network environments. Therefore, it becomes important to achieve adaptive methods of controlling...
Provided by ICST
-
White Papers
Robust Virtual Network Topology Control Based on Attractor Selection
Jan 2009
The growth of the Internet and emerging application layer technologies causes numerous changes in network environments. Therefore, it becomes important to achieve robust methods of controlling...
Provided by Osaka University
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White Papers
Designing Different Models of Robust IP/MPLS Over DWDM Networks
Nov 2011
Both IP/MPLS and DWDM layers can provide various resilient schemes to protect traffic from disruptions due to network failures. At the same time, both technologies provide the ability to realize...
Provided by International Journal of Computer Science and Telecommunications
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White Papers
Diverse Lightpath Protection Against Correlated and Probabilistic Failures in Multi-Domain Optical Networks
Mar 2012
This paper proposes a distributed lightpath protection scheme for diverse routing in multi-domain optical networks with correlated and probabilistic failures. This novel solution jointly considers...
Provided by University of New Mexico
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White Papers
Multi-Domain DWDM Network Provisioning for Correlated Failures
Jun 2011
Network survivability is a key area and many schemes have been studied for optical Dense Wavelength Division Multiplexing (DWDM) networks. These include pre-provisioned protection strategies for...
Provided by University of New Mexico
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White Papers
Post-Fault Restoration in Multi-Domain Networks With Multiple Failures
Oct 2010
Multi-domain networking is an important focus area and crankback signaling strategies offer much potential for post-fault recovery. However, most studies in this space have not addressed...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Provisioning for Probabilistic Failures in Multi-Domain DWDM Networks
Jun 2011
This paper addresses multi-domain light-path provisioning within the context of correlated multi-failure events. The paper jointly incorporates both risk minimization and traffic engineering...
Provided by University of New Mexico
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White Papers
A Review on Placement of Wavelength Converters in WDM P-Cycle Network
May 2011
The p-cycles can be described as preconfigured closed protection paths in a mesh network. Like rings, the protection path is preconnected in advance of any failure and protection capacity is very...
Provided by International Journal of Advances in Engineering & Technology (IJAET)
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White Papers
A Review of Time Domain Switching Optical Burst Switched Networks
Feb 2012
Optical networks are in continuous demand for their large bandwidth availability. Many optical switching paradigms have been proposed. Among these paradigms, three of them have received more...
Provided by The Second International Conference on Communications and Information Technology
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White Papers
Enabling Large Data Transfers on Dynamic, Very High-Speed Network Infrastructures
Jan 2012
High-speed networks are being built using the most up-to-date networking technologies such as optical fibers with Dense Wavelength Multiplexing (DWDM) in order to meet the performance constraints...
Provided by INRIA
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White Papers
Performance Analysis of Receivers in WDM for Extended Reach Passive Optical Networks
Mar 2012
In this paper, the authors have investigated and analyzed the performance of receivers for different classes of WDM PON system for next generation Passive Optical Networks. The performance is...
Provided by International Journal of Computer Science Issues
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White Papers
Transparent Transmission of a Secure Time Domain Spectral Phase Encoding/Decoding DPSK - OCDM Signal Over a DWDM Network
May 2011
The authors propose and experimentally demonstrate a transparent Optical-Code-Division Multiplexing (OCDM) overlay public Dense Wavelength-Division Multiplexing (DWDM) network architecture enabled...
Provided by Optical Society of America
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White Papers
Backup Reprovisioning After Shared Risk Link Group (SRLG) Failures in WDM Mesh Networks
Aug 2010
In this paper, the authors study the impact of Shared Risk Link Group (SRLG) failures on shared path protection by examining the percentage of connections that are vulnerable after SRLG failures,...
Provided by Optical Society of America
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White Papers
Towards a Bufferless Optical Internet
Feb 2009
This paper investigates the relationship between buffer size and long-term average TCP performance in Dense Wavelength Division Multiplexing (DWDM) networks. By investigating TCP NewReno, the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Dynamic Distributed Spectrum Allocation in GMPLS Controlled Elastic Optical Networks
Apr 2011
The authors propose and experimentally evaluate a distributed spectrum assignment approach for GMPLS-controlled elastic networks based on collecting the frequency slot availability information...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
Enhanced Backwards Recursive Path Computation for Multi-Area Wavelength Switched Optical Networks Under Wavelength Continuity Constraint
Jul 2009
In the context of the future Internet, all optical wavelength switched optical networks will play an important role in either evolutionary or revolutionary design paradigms. In any paradigm, Dense...
Provided by Optical Society of America
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Whitepapers
Unified GMPLS-Based Control of Carrier-Grade Ethernet Over DWDM
May 2009
As the current networks run into bandwidth scalability limits, network carriers are looking for new technology options in order to provide more bandwidth as well as to improve their existing...
Provided by Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
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Whitepapers
All-Optical Clock Recovery of 20 Gbit/s NRZ-DPSK Signals Using Polarization-Maintaining Fiber Loop Mirror Filter and Semiconductor Optical Amplifier Fiber Ring Laser
Feb 2009
Ultra-Dense Wavelength Division Multiplexing (UDWDM) concept originates in long-haul fiber-optic communications, it is also expected to be a key enabling technology for future massively parallel...
Provided by Reed Elsevier
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Whitepapers
High Performance Efficiency of Distributed Optical Fiber Raman Amplifiers for Different Pumping Configurations in Different Fiber Cable Schemes
Feb 2012
Fiber Raman Amplifiers (FRAs) are attractive for Ultra Wide Dense Wavelength Division Multiplexing (UW-DWDM) transmission systems due to their advantages of broad amplification bandwidth and...
Provided by International Journal of Computer Science and Network Security
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Whitepapers
Study of Re-Provisioning Mechanism for Dynamic Traffic in WDM Optical Networks
Feb 2008
In centralized-controlled WDM network, the traffic request arrived at the control node will be blocked if the lightpath is failed to be established, and the blocked request will not be issued...
Provided by Vanung University
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Whitepapers
Cost-Effective Transition to 40 Gb/s Line Rate Using the Existing 10 Gb/s-Based DWDM Infrastructure
Apr 2008
In this paper, the authors propose and demonstrate a cost-effective technique to upgrade the capacity of Dense Wavelength Division Multiplexing (DWDM) networks to a 40 Gb/s line rate using the...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
A Discrete-Time Polynomial Model of Single Channel Long-Haul Fiber-Optic Communication Systems
Apr 2011
To mitigate various physical impairments of long-haul Dense Wavelength Division Multiplexing (DWDM) systems and exploit their system capacity, there is a need to develop a two-dimensional (time...
Provided by Institute of Electrical & Electronic Engineers
