Field trial of optical performance monitor in dynamically configurable DWDM network

Richter, A.; Bock, H.; Fischler, W.; Elbers, Joerg-Peter; Glingener, C.; Bach, R.; Grupp, Wolfgang

doi:10.1049/el:20010248

Cited by 4 publications

(3 citation statements)

References 2 publications

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“…The measured BERs are extrapolated to the crossover point of both branches (compare e.g. [16]). Within systems using forward error correction (FEC), high bit error rates before FEC correction can occur.…”

Section: Receiver Based Methodsmentioning

confidence: 99%

Optical performance monitoring (OPM) in next-generation optical networks

Neuhauser

2002

SPIE Proceedings

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DWDM transmission is the enabling technology currently pushing the transmission bandwidths in core networks towards the multi-Tb/s regime with unregenerated transmission distances of several thousand km. Such systems represent the basic platform for transparent DWDM networks enabling both the transport of client signals with different data formats and bit rates (e.g. SDH/SONET, IP over WDM, Gigabit Ethernet, etc.) and dynamic provisioning of optical wavelength channels. Optical Performance Monitoring (OPM) will be one of the key elements for providing the capabilities of link set-up/control, fault localization, protection/restoration and path supervisioning for stable network operation becoming the major differentiator in next-generation networks.Currently, signal quality is usually characterized by DWDM power levels, spectrum-interpolated Optical Signal-toNoise-Ratio (OSNR), and channel wavelengths. On the other hand there is urgent need for new OPM technologies and strategies providing solutions for in-channel OSNR, signal quality measurement, fault localization and fault identification. Innovative research and product activities include polarization nulling, electrical and optical amplitude sampling, BER estimation, electrical spectrum analysis, and pilot tone technologies.This presentation focuses on reviewing the requirements and solution concepts in current and next-generation networks with respect to Optical Performance Monitoring.

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Section: Receiver Based Methodsmentioning

confidence: 99%

Optical performance monitoring (OPM) in next-generation optical networks

Neuhauser

2002

SPIE Proceedings

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“…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]. They all require some degree of signal tapping [26], resulting in an intrusive approach, which will be introducing at least minor performance degradation due to either increased attenuation or monitoring signal injection.…”

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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“…To verify the proposed algorithm, we conduct computer simulations in both Gaussian and non-Gaussian distribution cases. earlier to estimate BER [15][16][17]. However, to our knowledge, the earlier researchers have not analyzed this scheme clearly and have not presented a related algorithm.…”

mentioning

confidence: 98%

An Algorithm for Bit Error Rate Monitoring and Adaptive Decision Threshold Optimization Based on Pseudo-error Counting Scheme

Kim

2010

Journal of the Optical Society of Korea

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Bit error rate (BER) monitoring is the ultimate goal of performance monitoring in all digital transmission systems as well as optical fiber transmission systems. To achieve this goal, optimization of the decision threshold must also be considered because BER is dependent on the level of decision threshold. In this paper, we analyze a pseudo-error counting scheme and propose an algorithm to achieve both BER monitoring and adaptive decision threshold optimization in optical fiber transmission systems. To verify the effectiveness of the proposed algorithm, we conduct computer simulations in both Gaussian and non-Gaussian distribution cases. According to the simulation results, BER and the optimum decision threshold can be estimated with the errors of < 20% and < 10 mV, respectively, within 0.1-s processing time in > 40-Gb/s transmission systems.

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Field trial of optical performance monitor in dynamically configurable DWDM network

Cited by 4 publications

References 2 publications

Optical performance monitoring (OPM) in next-generation optical networks

Optical performance monitoring (OPM) in next-generation optical networks

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

An Algorithm for Bit Error Rate Monitoring and Adaptive Decision Threshold Optimization Based on Pseudo-error Counting Scheme

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