Introduction of alien wavelength into Cesnet DWDM backbone

Slavíček, Karel; Novák, Václav

doi:10.1109/icics.2007.4449739

Cited by 7 publications

(6 citation statements)

References 2 publications

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“…First, we mix dispersion compensated and dispersion non-compensated domains, and non-coherent and coherent transponders. Second, one of the end-to-end AWs does not have a native network segment as the AW deployments presented in previous works [4], [5]. Such a scenario poses many challenges and presents a rather extreme case of network expansion.…”

Section: Solutionsmentioning

confidence: 99%

“…Thus far, the deployment of AWs has been demonstrated in relation to either novel service delivery (i.e., at the border between the transport network and the higher layer (typically IP) client) [1]- [3] or in relation to interconnection of long-haul transport domains (i.e., at the border between two transport service providers) [4], [5]. This work focuses on a third application scenario -the case of flexible network deployment/evolution.…”

Section: Interfacesmentioning

confidence: 99%

“…The technical This work has been supported by the Danish Advanced Technology Foundation (Hjteknologifonden) through the research project "Providing new capacity services for multi-vendor optical transport networks via an open interface" 1 Note that most often the system is perfectly capable of transporting the AW, but cannot guarantee its performance feasibility of AWs has been documented in several different scenarios over the past years. In particular two application scenarios have been illustrated and evaluated: the interconnection of core IP routers equipped with long-reach pluggable transponders via a third party WDM transport network [1]- [3], and the interconnection of two WDM transport segments, typically within the research and education community (NRENs) [4], [5].…”

Section: Introductionmentioning

confidence: 99%

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Flexible transport network expansion via open WDM interfaces

Fagertun

Skjoldstrup

2013

2013 International Conference on Computing, Networking and Communications (ICNC)

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Abstract-This paper presents a successful test-bed implementation of a multi-vendor transport network interconnection via open WDM interfaces. The concept of applying Alien Wavelengths (AWs) for network expansion was successfully illustrated via deployment of multi-domain/multi-vendor end-to-end OTN services. We evaluate the impact of AW service establishment on both native and other alien services. Our experience confirms the technical feasibility of the concept in the context of transparent network-to-network interconnection at the optical layer. Furthermore, main operational challenges are discussed.

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Section: Solutionsmentioning

confidence: 99%

Section: Interfacesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Flexible transport network expansion via open WDM interfaces

Fagertun

Skjoldstrup

2013

2013 International Conference on Computing, Networking and Communications (ICNC)

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“…This solution was previously used in Metropolitan Digital Imaging in Medicine (MEDIMED) [2], [3] in the Czech National Research and Education Network Operator (CESNET) network. MEDIMED project introduced PACS functionality with regard to different networking technologies, however if WDM access is possible, the AW is pri-mary choice for interconnection [4]. In this work authors present analysis of difference between transmission system, using AW channels with configurable and non-configurable XFP optical modules and also standard approach, designed for Warsaw metropolis hospital data exchange.…”

Section: Introductionmentioning

confidence: 99%

Design of WDM Transmission System for Medical Data Exchange

Cybulski,

Perlicki

2014

JTIT

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This paper describes design of the Wavelength Division Multiplexing (WDM) transmission system using Alien Wavelength channels for medical data exchange. Main purpose of such system is to develop variety of services for medical cases diagnostics in order to comply with modern standards in telemedicine. Those standards refer to photo or video data transmission produced by diagnostic devices used in radiological centers together with text data concerning medical case analysis and patient data. These features are delivered by Picture Archiving and Communication System (PACS). PACS describes intra-hospital network organization, which applies to constructing system data from raw graphical data and text information according to Digital Imaging and Communications in Medicine (DICOM) version 3.0 standard. This standard is used by authors to evaluate necessary bit rate concerning all types of services delivered by PACS and cumulative throughput of link connections between hospitals and databases. Organization of this connections in metropolitan WDM system using advantages of Alien Wavelength technique is this article the main goal. Difference between configurable and non-configurable 10 Gigabit Small Form Factor Pluggable (XFP) end devices for Alien Wavelength channels are analyzed and compared with the standard approach using transponder cards.

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“…The bottom figure is the weakest yet fully usable signal. Pictures are taken from[19].Selected Topics on Computed Tomography…”

mentioning

confidence: 99%