Packet loss analysis of shared-per-wavelength multi-fiber all-optical switch with parallel scheduling

Authors:
V. Eramo;A. Germoni;C. Raffaelli;M. Savi
Affiliations:
INFOCOM Department, University of Rome, "Sapienza" Via Eudossiana 18, 00184 Rome, Italy;INFOCOM Department, University of Rome, "Sapienza" Via Eudossiana 18, 00184 Rome, Italy;D.E.I.S., University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy;D.E.I.S., University of Bologna, Viale Risorgimento 2, 40136 Bologna, Italy
Venue:
Computer Networks: The International Journal of Computer and Telecommunications Networking
Year:
2009

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Abstract

This paper discusses a multi-fiber all-optical switch which shares wavelength converters for contention resolution. The proposed switch architecture employs fixed-input/tunable-output wavelength converters (expected to be less complex than tunable-input/tunable-output ones). The space switching matrix is modular and simple with respect to switching architectures with different wavelength converters sharing schemes (i.e. shared-per-node architecture). A parallel scheduling algorithm is defined to control optical packet forwarding in a synchronous scenario as well as an analytical model to evaluate packet loss performance. The analytical model is validated against simulation and previous analysis and the results obtained show good accuracy in most cases of interest for optical switch design.