Dynamic physical impairment-aware routing and wavelength assignment in 10/40/100 Gbps mixed line rate optical networks

2014 ◽  
Author(s):  
Filippos Balasis ◽  
Xin Wang ◽  
Sugang Xu ◽  
Yoshiaki Tanaka
Keyword(s):  
Optical Networks ◽  
Routing And Wavelength Assignment ◽  
Wavelength Assignment ◽  
Physical Impairment ◽  
Mixed Line ◽  
Mixed Line Rate

A Novel Dynamic Physical Layer Impairment-Aware Routing and Wavelength Assignment (PLI-RWA) Algorithm for Mixed Line Rate (MLR) Wavelength Division Multiplexed (WDM) Optical Networks

2016 ◽  
Vol 37 (4) ◽  
Author(s):  
Sridhar Iyer
Keyword(s):  
Optical Networks ◽  
Phase Modulation ◽  
Routing And Wavelength Assignment ◽  
Physical Layer ◽  
Data Rate ◽  
Wavelength Assignment ◽  
Wdm Optical Networks ◽  
Modulation Formats ◽  
Mixed Line ◽  
Mixed Line Rate

AbstractThe ever-increasing global Internet traffic will inevitably lead to a serious upgrade of the current optical networks’ capacity. The legacy infrastructure can be enhanced not only by increasing the capacity but also by adopting advance modulation formats, having increased spectral efficiency at higher data rate. In a transparent mixed-line-rate (MLR) optical network, different line rates, on different wavelengths, can coexist on the same fiber. Migration to data rates higher than 10 Gbps requires the implementation of phase modulation schemes. However, the co-existing on-off keying (OOK) channels cause critical physical layer impairments (PLIs) to the phase modulated channels, mainly due to cross-phase modulation (XPM), which in turn limits the network’s performance. In order to mitigate this effect, a more sophisticated PLI-Routing and Wavelength Assignment (PLI-RWA) scheme needs to be adopted. In this paper, we investigate the critical impairment for each data rate and the way it affects the quality of transmission (QoT). In view of the aforementioned, we present a novel dynamic PLI-RWA algorithm for MLR optical networks. The proposed algorithm is compared through simulations with the shortest path and minimum hop routing schemes. The simulation results show that performance of the proposed algorithm is better than the existing schemes.

A Survey on Next-Generation Mixed Line Rate (MLR) and Energy-Driven Wavelength-Division Multiplexed (WDM) Optical Networks

2015 ◽  
Vol 36 (2) ◽  
Author(s):  
Sridhar Iyer
Keyword(s):  
Energy Consumption ◽  
Optical Networks ◽  
Information And Communication Technologies ◽  
Optical Network ◽  
Wavelength Assignment ◽  
Wavelength Division ◽  
Wavelength Division Multiplexed ◽  
Research Activities ◽  
Mixed Line ◽  
Mixed Line Rate

AbstractWith the ever-increasing traffic demands, infrastructure of the current 10 Gbps optical network needs to be enhanced. Further, since the energy crisis is gaining increasing concerns, new research topics need to be devised and technological solutions for energy conservation need to be investigated. In all-optical mixed line rate (MLR) network, feasibility of a lightpath is determined by the physical layer impairment (PLI) accumulation. Contrary to PLI-aware routing and wavelength assignment (PLIA-RWA) algorithm applicable for a 10 Gbps wavelength-division multiplexed (WDM) network, a new Routing, Wavelength, Modulation format assignment (RWMFA) algorithm is required for the MLR optical network. With the rapid growth of energy consumption in Information and Communication Technologies (ICT), recently, lot of attention is being devoted toward “green” ICT solutions. This article presents a review of different RWMFA (PLIA-RWA) algorithms for MLR networks, and surveys the most relevant research activities aimed at minimizing energy consumption in optical networks. In essence, this article presents a comprehensive and timely survey on a growing field of research, as it covers most aspects of MLR and energy-driven optical networks. Hence, the author aims at providing a comprehensive reference for the growing base of researchers who will work on MLR and energy-driven optical networks in the upcoming years. Finally, the article also identifies several open problems for future research.

scholarly journals Routing Strategies in Survivable Optical Networks

2013 ◽  
Vol 9 (2) ◽  
pp. 1055-1062
Author(s):  
Ifrah Amin ◽  
Gulzar Ahmad dar ◽  
Hrdeep singh Saini
Keyword(s):  
Optical Networks ◽  
Blocking Probability ◽  
Optical Network ◽  
Routing And Wavelength Assignment ◽  
Wavelength Assignment ◽  
Routing Problem ◽  
Routing Strategy ◽  
Survivable Optical Networks ◽  
Conventional Algorithm ◽  
Better Than

Routing and wavelength assignment problem is one of the main problem in optical networks. The foremost problem is the routing problem after which the wavelength assignment is to be decided. In this paper we have proposed a routing strategy for optimization of the performance of the optical network in terms of blocking probability. The strategy proposed is better than the conventional algorithm in terms of blocking. 

Sign in / Sign up

Export Citation Format

Share Document