IoT 15(3): e5

Research Article

Analysis of fibre-loop optical buffers with a void-avoiding schedule

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  • @ARTICLE{10.4108/icst.valuetools.2014.258180,
        author={Wouter Rogiest and Jan-Pieter Dorsman and Dieter Fiems},
        title={Analysis of fibre-loop optical buffers with a void-avoiding schedule},
        journal={EAI Endorsed Transactions on Internet of Things},
        keywords={optical buffer, fiber loop, queueing, polling, discrete, continuous},
  • Wouter Rogiest
    Jan-Pieter Dorsman
    Dieter Fiems
    Year: 2015
    Analysis of fibre-loop optical buffers with a void-avoiding schedule
    DOI: 10.4108/icst.valuetools.2014.258180
Wouter Rogiest1,*, Jan-Pieter Dorsman2, Dieter Fiems1
  • 1: Ghent University
  • 2: Eindhoven University of Technology / Centrum Wiskunde & Informatica
*Contact email:


In optical packet/burst switching, fibre-loop optical buffers provide a compact and effective means of contention resolution. In case of fixed packet length, the involved loop length is typically chosen matched (equal to the packet length), and the loops are arranged in parallel, constituting a single-stage buffer. In this contribution, we investigate the performance of such a buffer in an asynchronous network setting, assuming batch-Poisson arrivals and assuming a so-called void-avoiding schedule. We show that by time-discretisation, the fibre-loop dynamics can be captured by a particular type of exhaustive polling model. We obtain performance measures such as the moments of the optical queue content and packet delay for the discretised model as well as for the asynchronous optical buffer. We illustrate our approach by various numerical examples.