Estimation Uncertainties in the Optical Signal-to-Noise Ratio Network Optimization

Fábio Durand, Guilherme M. Lopes, Amanda Spagolla, Taufik Abrão


In this work, we investigate the effects of estimation uncertainties in the optimization of the optical signal-to-noise ratio (OSNR) at the wavelength division multiplexing (WDM) optical networks. The OSNR optimization increases the network throughput and energy efficiency and it enables to minimize the number of retransmissions by higher layers. The OSNR optimization algorithms are related with the optical channel estimation performed by the combinations of optical performance monitors (OPM) measurements, analytical models and simulations. Furthermore, the estimation uncertainties are introduced by several factors such as the availability of monitoring information, monitoring accuracy, imperfection of physical layer and dynamic of channel allocation. The main results have shown the relation between the uncertainties in the channel error estimation, normalized mean squared error (NMSE) and power penalty for an evaluated numerical example. The methodology developed could be utilized to determinate the maxim level of acceptable uncertainties in the channel error estimation according the power penalty permitted in the OSNR optimization.


optical networks, optical signal noise ratio, uncertainties, optimization algorithm.

Full Text:



D. Kilper, K. Bergman, V. W. S. Chen, I. Monga, G. Porter, and K. Rauschenbach, "Optical Networks Come of Age," OSA Optics and Photonics News, pp. 50-57, Sep. 2014.

B. Birand, H. Wang, K. Bergman, D. Kilper, T. Nandagopal, G. Zussman, "Real-time power control for dynamic optical networks - algorithms and experimentation," IEEE Journal on Selected Areas in Communications, vol. 32, no. 8, pp. 1615 – 1628, Aug. 2014.

R. Doverspike and J. Yates, "Optical network management and control,`` Proc.IEEE, vol. 100, no. 5, pp. 1092–1104, May 2012.

Rodney S. Tucker, "Green Optical Communications - Part II: Energy Limitations in Networks", IEEE J Selected Topics in Quantum Electronics, vol. 17, no. 2, pp. 261 – 274, March-April 2011.

J. Sole-Pareta, S. Subramaniam, D. Careglio, and S. Spadaro, "Cross-layer approaches for planning and operating impairment-aware optical networks,`` Proc. IEEE, vol. 100, no. 5, pp. 1118–1129, May 2012.

G. P. Agrawal, Fiber-optic communication systems, John Wiley & Sons, 2002.

L. Pavel, "OSNR optimization in optical networks: Modeling and distributed algorithms via a central cost approach,`` IEEE J. Sel. Areas Commun., vol. 24, no. 4, pp. 54–65, Apr. 2006.

F. R. Durand and T. Abrão, "Distributed SNIR Optimization Based on the Verhulst Model in Optical Code Path Routed Networks With Physical Constraints``, J. Opt. Commun. Netw., vol. 3, no. 9, pp. 683–691, Sep. 2011. doi:10.1364/JOCN.3.000683

Pan, Y. and L. Pavel, "OSNR Game Optimization with Link Capacity Constraints in General Topology WDM Networks, `` Optical Switching and Networking, vol. 11, Part A, pp. 1-15, Jan. 2014

G. Pavani, L. Zuliani, H. Waldman and M. Magalhães, "Distributed approaches for impairment-aware routing and wavelength assignment algorithms in GMPLS networks``, Computer Networks, vol. 52, no. 10, pp. 1905–1915, July 2008.

Z. Pan, C. Yu, and A. Willner, "Optical performance monitoring for the next generation optical communication networks,`` Opt. Fiber Technol., vol. 16, no. 1, pp. 20–45, 2010.

D. Kilper, R. Bach, D. Blumenthal, D. Einstein, T. Landolsi, L. Ostar, M. Preiss, and A. Willner, "Optical performance monitoring,`` J. Lightw. Technol., vol. 22, no. 1, pp. 294–304, Jan. 2004.

S. Pachnicke, T. Gravemann, M. Windmann, and E. Voges, "Physically constrained routing in 10-Gb/s DWDM networks including fiber nonlinearities and polarization effects,`` J. Lightwave Technol., vol. 24, n. 9, pp. 3418–3426, Sep. 2006.

S. Azodolmolky et al., "A novel impairment aware RWA algorithm with consideration of QoT estimation inaccuracy,`` J. Opt. Commun. Netw., vol. 3, pp. 290–299, Apr. 2011.

T. Zami, A. Morea, F. Leplingard, and N. Brogard, "The relevant impact of the physical parameters uncertainties when dimensioning an optical core transparent network,`` in Proc. European Conf. Optical Communications (ECOC), 2008.

D. Dahan et al.: Optical performance monitoring for translucent/transparent optical networks, IET Optoelectr., vol. 5, n. 1, pp. 1-18, Feb. 2011.



  • There are currently no refbacks.

© Copyright 2007-2016 JMOe Brazilian Microwave and Optoelectronics Society (SBMO) and Brazilian Society of Electromagnetism (SBMag)