1st International ICST Workshop on Optical Burst/Packet Switching

Research Article

Quantifying the Impact of Wavelength Conversion on the Performance of Fiber Delay Line Buffers

  • @INPROCEEDINGS{10.1109/BROADNETS.2006.4374330,
        author={W. Rogiest and K. Laevens and D. Fiems and H. Bruneel},
        title={Quantifying the Impact of Wavelength Conversion on the Performance of Fiber Delay Line Buffers},
        proceedings={1st International ICST Workshop on Optical Burst/Packet Switching},
        publisher={IEEE},
        proceedings_a={WOBS},
        year={2006},
        month={10},
        keywords={OBS  OPS  fiber delay lines  loss probability  multi-server  multi-wavelength  optical buffers  optical switching  queueing},
        doi={10.1109/BROADNETS.2006.4374330}
    }
    
  • W. Rogiest
    K. Laevens
    D. Fiems
    H. Bruneel
    Year: 2006
    Quantifying the Impact of Wavelength Conversion on the Performance of Fiber Delay Line Buffers
    WOBS
    IEEE
    DOI: 10.1109/BROADNETS.2006.4374330
W. Rogiest1,*, K. Laevens1,*, D. Fiems1,*, H. Bruneel1,*
  • 1: SMACS Research Group, Ghent University, Sint-Pietersnieuwstraat 41, B-9000 Ghent, Belgium
*Contact email: wrogiest@telin.ugent.be, kl@telin.ugent.be, df@telin.ugent.be, hb@telin.ugent.be

Abstract

We present a performance model for fiber delay line (FDL) buffers having access to multiple wavelengths on an output fiber. In optical burst switching and optical packet switching, contending bursts (or packets) need to be dealt with in an effective way, and both wavelength conversion and optical buffering are viable solutions. The buffer studied here includes both solutions, with full wavelength conversion. It is situated at the output, and handles independent arrivals. We apply an analytic discrete-time queueing model to evaluate performance in terms of loss. We mainly consider the impact of burst size (fixed or varying), scheduling policy, and buffer size. Several numerical examples assess the accuracy of our approximation, and show that our approach is applicable when burst sizes are fixed, and, when a round-robin scheduling policy is adopted, also when burst sizes vary.