Time-resolved measurements of Q-factor in 560-km transmission link with transient control amplifiers

Turukhin, A.; Al-Salameh, D. Y.; Gonzales, E.; Krummrich, Peter M.; Lumish, S.; Rapp, L.

doi:10.1049/cp:20050532

Cited by 3 publications

(2 citation statements)

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“…In the case of bit errors the connection can be protected by an error free link. Thus a high service level and any link availability in dependence on customer requirements can be guaranteed [5]. A stepwise introduction of these new features with next system releases guarantees a seamless network operation.…”

Section: Accessmentioning

confidence: 99%

Next Generation Optical Networks and New Services: an Operator's Point of View

Ehrhardt¹

2007

2007 9th International Conference on Transparent Optical Networks

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The optical network must be suitable for new services with high quality of service and high availability offered by network operators. Private and business customers demand more and more triple play services. In the access domain the optical fibre will directly reach the buildings to satisfy the customers' demand on data rates and quality of the service with high flexibility and short provisioning time. Customer data rates directly influence on the transmission capacity of the links and require flexibility of the transport network. Classical optical networks in the backbone are based on fixed WDM transmission links with point-to-point configuration. Dense WDM systems (DWDM) for high capacity links coexist with Coarse WDM systems (CWDM) for cost effective links. The link data rate of the WDM channels is either 2.5 Gbit/s or 10 Gbit/s. But the next step of the network migration is the introduction of 40 Gbit/s channels. The 10 Gbit/s links must be suitable for implementation of 40 Gbit/s without any changes of the link design to minimise capex and opex. For more flexibility of the network reconfigurable OADM will be inserted in the links and network nodes. Thus the maximum transparency length can be increased but network operators have to take into account limiting physical effects like PMD, chromatic dispersion and spectral characteristics of the cascaded OADM while extending transmission speed of the channels up to 40 Gbit/s. The transport hierarchy of the network migrates from classical SDH-infrastructure to OTH-infrastructure with completely new features satisfying future network requirements. An automatically switched network supports flexibility and the necessary bandwidth can be provided to the customers on demand.

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Section: Accessmentioning

confidence: 99%

Next Generation Optical Networks and New Services: an Operator's Point of View

Ehrhardt¹

2007

2007 9th International Conference on Transparent Optical Networks

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“…In the case of bit errors the connection can be protected by an error free link. Thus a high service level and any link availability in dependence on customer requirements can be guaranteed [2]. A stepwise introduction of these new features with next system releases guarantees a seamless network operation.…”

Section: Fig 4 Reconfigurable Optical Networkmentioning

confidence: 99%

Next Generation Optical Networks: an Operator¿s Point of View

Ehrhardt¹

2006

2006 International Conference on Transparent Optical Networks

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Classical optical networks are based on fixed WDM transmission links with a point-to-point configuration. The network of incumbent network operators was dominated by the telephony services. The SDH/SONET-layer combining PDH data rates is the most common transmission hierarchy. But new data services like IP, Ethernet and Storage services with data rates incompatible to the SDH data rates penetrate the network. Either dark wavelengths must be provided for provision of these services or the new data rates have to be adapted to the SDH-network by generic framing procedure (GFP). Next generation networks are characterised by a high number of continuously growing different data rates, packet oriented data transmission and a convergence of voice and data to data transmission. A flexible network is required and can be provided by a network based on the Optical Transport Hierarchy (OTH) with new features like tandem connection monitoring (TCM) and forward error correction (FEC). The interfaces between different networks and the interfaces between customer network and transport network must be standardised. New features like flexible provision of the bandwidth are available by an automatically switched network and by deployment of reconfigurable OADM.

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