1st Annual Conference on Broadband Networks

Research Article

Crosstalk-aware wavelength assignment in dynamic wavelength-routed optical networks

  • @INPROCEEDINGS{10.1109/BROADNETS.2004.26,
        author={Tao Deng and Suresh Subramaniam and Jinghao Xu},
        title={Crosstalk-aware wavelength assignment in dynamic wavelength-routed optical networks},
        proceedings={1st Annual Conference on Broadband Networks},
  • Tao Deng
    Suresh Subramaniam
    Jinghao Xu
    Year: 2004
    Crosstalk-aware wavelength assignment in dynamic wavelength-routed optical networks
    DOI: 10.1109/BROADNETS.2004.26
Tao Deng1,*, Suresh Subramaniam1,*, Jinghao Xu1,*
  • 1: Department of Electrical and Computer Engineering, The George Washington University 801 22nd St NW, Washington DC, 20052, U.S.A
*Contact email: tdeng@gwu.edu, suresh@gwu.edu, jhxu@gwu.edu


In-band crosstalk has been widely considered as a major transmission impairment that significantly impacts the BER (bit error rate) performance of lightpaths in circuit-switched all-optical wavelength-routed networks. Such crosstalk usually occurs when multiple lightpaths occupying identical or adjacent wavelengths pass through an optical crossconnect node. Traditional WA (wavelength assignment) schemes pay little regard to the physical layer QoS (quality of service), and hence cannot provide optimized network performance in practice. In this paper, we propose four crosstalk-aware WA algorithms as variations of the well-known first-fit, random-pick, most-used and least-used schemes, with the crosstalk factor taken into consideration. Simulation results show that, independent of the network amplifier placement and the traffic, our WA algorithms can successfully suppress the in-band crosstalk throughout the network, and significantly decrease BER blocking rate.