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Performance of two-stage shared fiber delay line optical packet switch under bursty traffic

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Abstract

Packet contention is a major issue in an optical packet switching network. It is not a trivial task to resolve contention due to lack of optical RAM technology. This article proposes a two-stage shared fiber delay line (FDL) optical packet switch for contention resolution. In this article, shared FDLs are used to buffer optical packets, in which a pool of buffer memory is shared among all switch output ports. Most of the existing optical buffering schemes are output-based which require a huge number of FDLs as well as a larger switch size that incur extra implementation cost. However, a shared buffering approach is considered in this article in order to reduce implementation cost. In this article, FDLs are implemented in two stages using an extremely simple auxiliary switch. The proposed switch architecture leads to more efficient use of buffer space. The superiority of the proposed switch architecture has been established by means of extensive simulations. The performance of the proposed switch is investigated under bursty traffic. Simulation result shows that the proposed switch can achieve satisfactory performance at the price of a reasonable amount of FDLs. Moreover, the significance of the proposed switch is confirmed by simulation.

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Authors and Affiliations

  1. Division of Computer and Information Engineering, Dongseo University, Pusan, 617-716, Korea

    Ahmed Galib Reza & Hyotaek Lim

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  1. Ahmed Galib Reza
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  2. Hyotaek Lim
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Correspondence to Ahmed Galib Reza.

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Reza, A.G., Lim, H. Performance of two-stage shared fiber delay line optical packet switch under bursty traffic. Photon Netw Commun 21, 90–96 (2011). https://doi.org/10.1007/s11107-010-0283-x

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