wavelength assignment

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Wavelength Assignment to Minimize the Number of SONET ADMs in WDM Rings

Optical Wavelength Division Multiplexing WDM rings are being deployed to support SONET/SDH self-healing rings. The cost of such a system is dominated by the SONET Add/Drop Multiplexers ADMs. To minimize the system cost, algorithms must be developed to assign wavelengths to lightpaths in the system so that the number of...

Tags: SONET, Florida State University, WDM, Wavelength Assignment, Fiber Optics, Optical Networking, Networking, Telecommunications

White papers

Additional Resources

Fair QoS-Aware Adaptive Routing and Wavelength Assignment in All-Optical Networks

In all-optical networks with no wavelength conversion, signals must travel on the same wavelength over possibly very long distances. During transmission, the QoS of signals as measured by their Bit Error Rates is degraded not only by the propagation through fibers, but also by small optical leaks from other signals...

Tags: University Of Virginia, QoS

White papers 2008-01-01

Blocking in All-Optical Networks

This paper presents a new analytical technique, based on the inclusion - exclusion principle from combinatorics, for the analysis of all-optical networks with no wavelength conversion and random wavelength assignment. The paper uses this technique to propose two models of low complexity for analysing networks with arbitrary topologies and traffic...

Tags: Technique, Network, Indian Institute Of Science, Productivity

White papers 2008-01-01

Routing and Wavelength Assignment Methods in Single-Hop All-Optical Networks With Blocking

The paper considers single-hop all-optical networks in which wavelength-routed connections lightpaths between source-destination pairs are dynamically established and torn down in response to a random pattern of arriving connection requests and connection holding times. A connection request may be blocked if no wavelength is available on a suitable path from...

Tags: QoS, Network, Connection, Networking

White papers 2007-11-05

Examine the Cisco ONS 15454 MSPP, its components, and a network design example

The Cisco ONS 15454 is a highly flexible and scalable multiservice platform and one of the most widely deployed multiservice provisioning platform MSPP systems worldwide. Service providers and enterprise customers use it to build highly available transport networks for time-division multiplexing, Ethernet, storage extension, and wavelength services.In this...

Tags: Network, Cisco Systems Inc., Network Design, Cisco ONS 15454, Networking

Book chapters 2007-10-19

Physical-Layer Considerations for the Realistic Deployment of Impairment-Aware Connection Provisioning

Nowadays, impairment-aware connection provisioning is a hot topic due to the evolution of optical networks to all-optical infrastructures and to the need to maintain or enhance Quality of Service QoS. Most of the research efforts in this field use complex, analytical models of impairments as the basis for the connection...

Tags: Aware, Impairment, Provisioning

White papers 2007-06-15

Transparent Optical Network Design With Sparse Wavelength Conversion

This paper considers the design of transparent optical networks from a practical perspective. Network operators aim at satisfying the communication demands at minimum cost. Such an optimization involves three interdependent planning issues: the dimensioning of the physical topology, the routing of lightpaths, and the wavelength assignment. Further topics include the...

Tags: Optical Network, Zuse-Institut Berlin, Fiber Optics, Optical Networking, Networking, Telecommunications

White papers 2007-06-13

All-Optical Networking

A survey of recent literature on all optical networking is presented. Starting from multiplexing techniques and topological features, network design and performance issues are reviewed. Particular attention is devoted to Wavelength Division Multiplexing WDM networks. Static and dynamic solutions of the Routing and Wavelength Assignment RWA problem are considered. Issues...

Tags: Performance, Network, Performance Management, Networking, Fiber Optics, Optical Networking, Productivity, Human Resources, Workforce Management, Telecommunications

White papers 2001-07-31

Complexity of Wavelength Assignment in Optical Network Optimization

This paper studies the complexity of a spectrum of design problems for optical networks in order to carry a set of demands. Under Wavelength Division Multiplexing WDM technology, demands sharing a common fiber are transported on distinct wavelengths. Multiple fibers may be deployed on a physical link. The basic goal...

Tags: Alcatel, Alcatel-Lucent, Fiber, Fiber Optics, Network Technology, Networking, Optical Network, Optical Networking, Optimization, Telecommunications

White papers