Journal of Optics

, Volume 47, Issue 4, pp 496–503 | Cite as

Network blocking probability-based evaluation of proposed spectrum assignment strategy for a designed elastic optical network link

  • Deepak SharmaEmail author
  • Suresh Kumar
Research Article


Elastic optical networks (EONs), which are spectrum-efficient new generation optical networks, have been replacing traditional dense wavelength division multiplexing-based networks in backbone networks. The allocation of spectral resources while overcoming spectrum contiguity and continuity constraints is a challenging task in EONs. This paper presents a RSA simulation framework for a designed EON link, and the performance of existing spectrum assignment (SA) strategies (first fit, random fit and last fit) has been evaluated. This paper further presents a SA strategy based upon the relative difference between available spectrum slots width and the required slot width for an incoming traffic demand. The performance of proposed SA technique has been evaluated by carrying out simulations using the designed RSA simulation framework under different network load conditions. The comparative analysis with existing SA strategies shows that the proposed strategy is successful in reducing network blocking probability effectively.


EONs DWDM Routing and spectrum assignment (RSA) Orthogonal frequency division multiplexing (OFDM) Integer linear programming (ILP) Bandwidth-variable wavelength cross-connects (BV-WXC) Quadrature amplitude modulation (QAM) 


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Copyright information

© The Optical Society of India 2018

Authors and Affiliations

  1. 1.Department of Electronics and Communication EngineeringUniversity Institute of Engineering and Technology, MDURohtakIndia

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