Photonic Network Communications

, Volume 14, Issue 1, pp 11–22 | Cite as

On the performance of different node configurations in multi-fiber optical packet-switched networks

  • Yi Li
  • Gaoxi XiaoEmail author
  • H. Ghafouri-Shiraz
Original Article


With the development of optical packet-switching (OPS) technologies, multi-fiber OPS networks will play an important role in the future data transmissions. In such networks, instead of constructing some extremely expensive node configurations with strictly non-blocking switching function, a more practical solution is multi-board switches that contain a number of small-sized switching boards. In this article, we have evaluated the performance of several different multi-board switches, based on the following two main objectives: (i) better understanding the effects of different connection schemes between switching boards and optical buffers and (ii) investigating possible schemes for achieving comparable performance to that of the ideal, strictly non-blocking switches. Extensive simulation results have shown that unlike circuit-switched net- works, multi-board OPS cannot easily perform comparably to the strictly non-blocking switch by having slightly more fibers per link. Also, such a problem can be tackled by several different approaches. The most efficient one is to equip the switch with more buffers rather than to increase the switching-board size or to enhance the buffer sharing between different switching boards.


Optical packet switch Multi-fiber network Packet contention Multi-board optical switch Optical buffer 


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Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  1. 1.Network Technology Research Centre, School of Electrical and Electronic EngineeringNanyang Technological UniversitySingaporeSingapore
  2. 2.Department of Electronic, Electrical and Computer EngineeringThe University of BirminghamEdgbaston, BirminghamUK

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