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Effects of signal power control strategies and wavelength assignment algorithms on circuit OSNR in WDM networks

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Abstract

Software-defined networking is enabling wavelength-division multiplexed (WDM) networks to be programmable down to individual components. While taking into account typical gain and noise figure profiles of erbium-doped fiber amplifier (EDFA) components, the authors consider a number of signal power control strategies and compare their performance in terms of achievable lightpath optical signal-to-noise ratio (OSNR). These strategies are applied network-wide to concurrently control the gain of each individual amplifier and the signal power equalization at each reconfigurable optical add/drop multiplexer. Simulation and (in part) experimental results show that the lightpath OSNR is affected by three factors: the EDFA gain control strategy, power equalization strategy and wavelength assignment (WA) algorithm. A trade-off between lightpath average OSNR and OSNR variance across the WDM channels is also noted. Experimental work is conducted using a five-node meshed WDM network testbed proving both feasibility and effectiveness of a coordinated use of signal power control strategies and WA algorithms.

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Acknowledgments

This research was supported in part by NSF Grants No. CNS-1111329, CNS-1405405 and CNS-1409849 and the financial support of FUNTTEL, FINEP and CPqD Foundation under the Project 100GETH.

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Authors and Affiliations

  1. OpNeAR Lab, The University of Texas at Dallas, 800 West Campbell Rd., Richardson, TX, USA

    Xue Wang, Yue Fei, Miguel Razo & Andrea Fumagalli

  2. CPqD Foundation, Rod. Campinas/Mogi Mirim, km 118.5, Campinas, SP, Brazil

    Miquel Garrich, Alexandre D. Andrade, Matheus S. Svolenski & Heitor S. Carvalho

Authors
  1. Xue Wang
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  2. Yue Fei
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  3. Miguel Razo
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  4. Andrea Fumagalli
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  5. Miquel Garrich
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  6. Alexandre D. Andrade
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  7. Matheus S. Svolenski
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  8. Heitor S. Carvalho
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Correspondence to Xue Wang.

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Wang, X., Fei, Y., Razo, M. et al. Effects of signal power control strategies and wavelength assignment algorithms on circuit OSNR in WDM networks. Photon Netw Commun 31, 404–417 (2016). https://doi.org/10.1007/s11107-015-0596-x

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  • DOI: https://doi.org/10.1007/s11107-015-0596-x

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