Abstract

In future transparent (all-optical) WDM networks, the signal quality of transmission (QoT) will degrade due to physical layer impairments. In this paper, we propose two genetic algorithms for solving the static impairment-aware RWA (IA-RWA) problem by accounting for the impact of physical impairments in the optimization process when searching for the optimum routing path and wavelength channel. The first algorithm indirectly considers the physical impairments through the insertion of the path length and the number of common hops in the search process, using classical multiobjective optimization (MOO) strategies. The second algorithm is a single-objective genetic algorithm (GA) that uses the Q factor for the evaluation of the feasibility of the selected RWA solution. The Q factor is used in each iteration of the algorithm in a self-learning mode in order to evaluate the fitness of each solution to the RWA problem and trigger the evolution of the population. Performance results have shown that considering path length and number of common hops for indirectly handling impairments provide an efficient solution to the IA-RWA problem.

© 2010 Optical Society of America

Full Article  |  PDF Article
Related Articles
Genetic Approach for Optimizing the Placement of All-Optical Regenerators in WSON

Francesca Martinelli, Nicola Andriolli, Piero Castoldi, and Isabella Cerutti
J. Opt. Commun. Netw. 6(11) 1028-1037 (2014)

Genetic Algorithm for Joint Routing and Dimensioning of Dynamic WDM Networks

Ignacio de Miguel, Reinaldo Vallejos, Alejandra Beghelli, and Ramón J. Durán
J. Opt. Commun. Netw. 1(7) 608-621 (2009)

Priority Based Routing and Wavelength Assignment With Traffic Grooming for Optical Networks

Bijoy Chand Chatterjee, Nityananda Sarma, and Partha Pritim Sahu
J. Opt. Commun. Netw. 4(6) 480-489 (2012)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (4)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription