Current aspects of optical performance monitoring and failure root cause analysis in optical WDM networks

Kirstaedter, Andreas; Wrage, M.; Goeger, Gernot; Fischler, W.; Spinnler, Bernhard

doi:10.1117/12.579499

Cited by 6 publications

(8 citation statements)

References 26 publications

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“…They also monitor the optical signal, neglecting filters and electric distortions that are crucial for the signal quality at the decision point. In addition, they tap the optical signal reducing the effective receive power [1] [2]. In [3] a state based OPM with simultaneous estimation of CD, OSNR and non-linearities was shown, which could be cost-effectively realized as a by-product in direct detection receivers with equalization by MLSE.…”

Section: Introductionmentioning

confidence: 99%

Optical Performance Monitoring from FIR Filter Coefficients in Coherent Receivers

Hauske

Geyer

Kuschnerov

et al. 2008

OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference

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Please check the document version of this publication:• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication Citation for published version (APA):Hauske, F. N., Geyer, J. C., Kuschnerov, M., Piyawanno, K., Duthel, T., Fludger, C. R. S., ... Lankl, B. (2008 General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. GmbH & Co. KG, Hofmannstr. 51, D-81379, Munich, Germany Abstract: We present a robust and precise optical performance monitoring technique from FIR filter coefficients in coherent receivers with digital equalization. Residual chromatic dispersion, DGD and OSNR are simultaneously estimated from measured 111 Gbit/s data.

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Section: Introductionmentioning

confidence: 99%

Optical Performance Monitoring from FIR Filter Coefficients in Coherent Receivers

Hauske

Geyer

Kuschnerov

et al. 2008

OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference

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“…Moreover, they are required to handle multichannel WDM links at low implementation cost. There are many OPM methods [10][11][12][13]. However, the techniques are usually based on direct measurement of optical parameters such as OSNR [14][15][16], pilot tones [17], Q-factor measurement [18,19], in/out-of-service BER measurement/estimation [20][21][22], subcarrier multiplexing [23], data correlation [24], non-linear detection [25].…”

Section: Related Workmentioning

confidence: 99%

An optical performance monitoring method for Carrier Ethernet networks using OAM continuity check messages

Souza

Ribeiro

2011

Photon Netw Commun

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A key feature of Carrier Ethernet networks is its operation and management framework. The link state, in this context, is simply determined by the detection (or absence for a given period) of continuity check message (CCM) at the receiver end of a management end point. However, cross-layer information can be inexpensively gained by looking into the loss patterns of these CCM frames, especially when Carrier Ethernet is operating directly over wavelengths (Layer-1) from transparent optical links or networks. This paper experimentally demonstrates a case for optical signalto-noise and optical signal-to-interference estimation from monitoring standard CCM frame loss frame rate. Moreover, the loss pattern signatures of such physical-layer impairments may give in-depth link state information for fault and performance management as it may give valuable clues about the dominant impairing phenomena.

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“…The polarisation nulling method overcomes some of the limitations of conventional OSA for OSNR measurement. This approach is based upon the hypothesis that an optical signal has a well-defined polarisation, while the ASE noise component is unpolarised, which allows using the polarisation extinction ratio as a measure of the OSNR (Pan et al 2010;Kirstaedter et al 2005;Lee et al 2006). As showninFig.…”

Section: In-band Osnr Monitoringmentioning

confidence: 99%

“…Key parameters to be monitored are: channel wavelength, channel power, OSNR and their respective drifts. According to (Kirstaedter et al 2005), the values have to be obtained every 10 ms for power and wavelength and 100 ms for optical OSNR. On the other hand, such signal distortions as in-band OSNR, accumulated CD and PMD are considered as advanced parameters which need more complex monitoring techniques.…”

Section: Optical Performance Monitoringmentioning

confidence: 99%

Signal Processing, Management and Monitoring in Transmission Networks

Vázquez

Montalvo

Ahmed

et al. 2011

Optical Transmission

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1higher, linear and non-linear fibre impairments become prominent factors affecting the signal quality. Thus, new techniques in both physical layer and network layer are necessary for mitigating impairments to accommodate high-speed traffic (Tomkos et al. 2002). On the other hand, the flexibility of modern networks with dynamic and distributed management, where lightpaths can be dynamically and automatically assigned end-to-end, increases the risk of changing path conditions that affect signal quality and consequently quality of service (QoS) over the lifetime of a connection as well as for subsequent connection set-up requests (on-demand routing and wavelength assignment -RWA). For traditional connection provisioning an ideal physical layer, ignoring transmission impairments (Chlamtac et al. 1992) could be assumed because the implicit per hop regeneration (optics-to-electronics-to-optics conversion -O/E/O) compensated signal impairments hop-by-hop in a rather static manner (section commissioning). For end-to-end all-optically switched connections using photonic cross-connect switches (PXC), the conditions change and common practice is not applicable. Anyhow, intelligent connection provisioning is an important traffic engineering problem, and minimising operational cost as well as efficiently utilising network resources is the main driver. In this context, it seems important to have flexible routing protocols that take into consideration the most relevant physical impairments, and are able to exchange messages with their values as part of the route information with others. This condition, if definitely used to calculate routing, will surely assure better success in data delivery over the network (Huang et al. 2005). Irrespective of the control architecture chosen by an operator of an optical network, the included control plane (in charge of setting up and tearing down optical circuits; also known as lightpaths) needs to have a proper set of tools to satisfyingly deal with physical impairments. The most essential tools are: optical signal monitoring, signal processing and impairment compensation techniques (each all-optically and/or electrically). With the help of these tools, it is possible to predict the QoT (quality of transmission) attainable for a lightpath at a given time (i.e. the latest network-wide monitoring instant), and the control plane can route requests across the network

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Current aspects of optical performance monitoring and failure root cause analysis in optical WDM networks

Cited by 6 publications

References 26 publications

Optical Performance Monitoring from FIR Filter Coefficients in Coherent Receivers

Optical Performance Monitoring from FIR Filter Coefficients in Coherent Receivers

An optical performance monitoring method for Carrier Ethernet networks using OAM continuity check messages

Signal Processing, Management and Monitoring in Transmission Networks

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