Colorless, Directionless and Contentionless multi-degree ROADM architecture for mesh optical networks

Devarajan, Agilandeswari; Sandesha, K; Gowrishankar, R.; Kishore, B Sai; Prasanna, G. N. Srinivasa; Johnson, Ron; Voruganti, Pavan

doi:10.1109/comsnets.2010.5431987

Cited by 26 publications

(21 citation statements)

References 10 publications

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“…For the ROADM architecture, this work focuses on spectrum routing design with colorless, directionless and contentionless features [11], [12] while a two-stage composition (Fig. 3) is considered for the AoD implementation.…”

Section: Inter-core Crosstalk (Xt) Aware Resource Allocation Formentioning

confidence: 99%

Resource Allocation for Space-Division Multiplexing: Optical White Box Versus Optical Black Box Networking

Muhammad

Zervas

Forchheimer

2015

J. Lightwave Technol.

157

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Section: Inter-core Crosstalk (Xt) Aware Resource Allocation Formentioning

confidence: 99%

Resource Allocation for Space-Division Multiplexing: Optical White Box Versus Optical Black Box Networking

Muhammad

Zervas

Forchheimer

2015

J. Lightwave Technol.

157

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“…Similarly, the ROADM structure notably evolved in the past years in order to accomplish more flexibility. Colorless, directionless, and contentionless (CDC) features are introduced to enhance the role of ROADM [51][52][53]. In colorless design any wavelength can be assigned to an add/drop port of the ROADM.…”

Section: Node Architecture For Elastic Optical Transportmentioning

confidence: 99%

Planning and Provisioning Strategies for Optical Core Networks

Muhammad

2015

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Optical communication networks are considered the main catalyst for the transformation of communication technology, and serve as the backbone of today's Internet. The inclusion of exciting technologies, such as, optical amplifiers, wavelength division multiplexing (WDM), and reconfigurable optical add/drop multiplexers (ROADM) in optical networks have made the cost of information transmission around the world negligible. However, to maintain the cost effectiveness for the growing bandwidth demand, facilitate faster provisioning, and provide richer sets of service functionality, optical networks must continue to evolve. With the proliferation of cloud computing the demand for a promptly responsive network has increased. Moreover, there are several applications, such as, real time multimedia services that can become realizable, depending on the achievable connection set-up time.Given the high bandwidth requirements and strict service level specifications (SLSs) of such applications, dynamic on-demand WDM networks are advocated as a first step in this evolution. SLSs are metrics of a service level agreement (SLA), which is a contract between a customer and network operator. Apart from the other candidate parameters, the set-up delay tolerance, and connection holding-time have been defined as metrics of SLA. Exploiting these SLA parameters for on-line provisioning strategies exhibits a good potential in improving the overall network blocking performance. However, in a scenario where connection requests are grouped in different service classes, the provisioning success rate might be unbalanced towards those connection requests with less stringent requirements, i.e., not all the connection requests are treated in a fair way.The first part of this thesis focuses on different scheduling strategies for promoting the requests belonging to smaller set-up delay tolerance service classes. The first part also addresses the problem of how to guarantee the signal quality and the fair provisioning of different service classes, where iii each class corresponds to a specified target of quality of transmission. Furthermore, for delay impatient applications the thesis proposes a provisioning approach, which employs the possibility to tolerate a slight degradation in quality of transmission during a small fraction of the holding-time.The next essential phase for scaling system capacity and satisfying the diverse customer demands is the introduction of flexibility in the underlying technology. In this context, the new optical transport networks, namely elastic optical networks (EON) are considered as a worthwhile solution to efficiently utilize the available spectrum resources. Similarly, space division multiplexing (SDM) is envisaged as a promising technology for the capacity expansion of future networks. Among the alternative for flexible nodes, the architecture on demand (AoD) node has the capability to dynamically adapt its composition according to the switching and processing needs of the network traffic.The second part o...

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“…The key enabler for flexible networks is the reconfigurable optical add/drop multiplexer (ROADM) [1][2][3]. All ROADM architectures allow remote reconfigurability of the cross connections.…”

Section: Introductionmentioning

confidence: 99%

“…However, it is not only increasing but becoming more dynamic. To cope with the traffic dynamicity while using efficiently the available bandwidth the introduction of flexible optical networks is mandatory [1][2][3]. In fixed frequency node architectures physical add/drop ports are assigned to specific wavelengths and directions.…”

Section: Introductionmentioning

confidence: 99%