Experimental demonstration of robustness and accuracy of a DLI-based OSNR monitor under changes in the transmitter and link for different modulation formats and baud rates

Almaiman, Ahmed; Chitgarha, Mohammad Reza; Daab, Wajih; Ziyadi, Morteza; Mohajerin-Ariaei, Amirhossein; Khaleghi, Salman; Willner, Moshe; Vusirikala, Vijay; Zhao, Xiaoxue; Kilper, Daniel C.; Paraschis, Loukas; Ahsan, Atiyah; Wang, Michael; Bergman, Keren; Tur, Moshe; Touch, Joseph D.; Willner, Alan E.

doi:10.1364/ol.40.002012

Cited by 3 publications

(3 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The NEB is defined as the noise equivalent bandwidth for the filter. In the series paper [93]- [96], some practical application issues of DLI-based OSNR monitor were investigated. Reference [93] gives design guidelines of DLI-based OSNR monitor to achieve a desired level of monitoring accuracy.…”

Section: Opm At the Intermediate Network Nodes Using Low-cost Structuresmentioning

confidence: 99%

“…Reference [95] demonstrates its format transparency and baud rate tunability and gives an operating guidelines for a desired level of monitoring accuracy for coherent data channels including the shape of the filter spectrum, the bandwidth of the filter, DLI delay, and DLI phase-detuning. In [96], the monitor accuracy is experimentally examined when the initially measured calibration parameters of the DLI-based monitor for a 25-Gbaud PM-QPSK signal are kept fixed without updating in the presence of various systems changes by modifying the transmitter and link parameters. Additionally, by tuning the optical filter to an offset frequency of the target optical signal and adjusting the phase shift of the DLI, it succeed in monitoring the OSNR of Nyquist-Shaped superchannels with <1dB accuracy [97].…”

Section: Opm At the Intermediate Network Nodes Using Low-cost Structuresmentioning

confidence: 99%

See 1 more Smart Citation

Optical Performance Monitoring: A Review of Current and Future Technologies

Dong

Khan

Shu

et al. 2016

J. Lightwave Technol.

279

100

View full text Add to dashboard Cite

Optical Performance Monitoring (OPM) is the estimation and acquisition of different physical parameters of transmitted signals and various components of an optical network. OPM functionalities are indispensable in ensuring robust network operation and plays a key role in enabling flexibility and improve overall network efficiency. We review the development of various OPM techniques for direct-detection systems and digital coherent systems and discuss future OPM challenges in flexible and elastic optical networks.

show abstract

Section: Opm At the Intermediate Network Nodes Using Low-cost Structuresmentioning

confidence: 99%

Section: Opm At the Intermediate Network Nodes Using Low-cost Structuresmentioning

confidence: 99%

Optical Performance Monitoring: A Review of Current and Future Technologies

Dong

Khan

Shu

et al. 2016

J. Lightwave Technol.

279

100

View full text Add to dashboard Cite

show abstract

“…It is worth noting that there actually exist many methods in the literature to monitor the in-band OSNR. For example, the delay-line interferometer (DLI) based methods [24], [25] which are based on single channel monitoring. We address the feasibility of integrating this monitoring function into ROADMs leveraging the architecture-on-demand (AoD) concept [26].…”

Section: Integrating In-band Osnr Monitoring At Intermediate Nodesmentioning

confidence: 99%

Self-Learning Monitoring On-Demand Strategy for Optical Networks

Meng¹,

Mavromatis²,

Bi³

et al. 2018

J. Opt. Commun. Netw.

View full text Add to dashboard Cite

In current dynamic optical networks with cascaded filters and amplifiers, optical signal-to-noise ratio (OSNR) can vary significantly from channel to channel. Under such uncertainty, OSNR prediction for unestablished channels becomes indispensable but remains a big challenge. For protective network planning purposes such as margin threshold setting or wavelength assignment, it is desirable to evaluate the worst OSNR performance of each network link. Such exploration will unavoidably employ active monitoring probes which may cause interruptions to the network. An efficient active monitoring strategy that optimizes the choice of probes or monitoring trials is needed. We propose a "self-learning" monitoring strategy integrated at intermediate nodes. Our method can intelligently select the channel to be monitored in order to search for the target global maxima of OSNR degradation for a specific link. Our monitoring scheme detects intermediate node OSNR in the linear regime. It is shown that our method can predict the target OSNR value with only 0.5dB error while reducing the required monitoring data by up to 91% compared with conventional methods.

show abstract