Novel Switch Architectures

  • Authors:

  • Wojciech Kabaciński;Jiajia Chen;Grzegorz Danilewicz;Janusz Kleban;Maria Spyropoulou;Ioannis Tomkos;Emmanouel Varvarigos;Kyriakos Vlachos;Slawomir Wêclewski;Lena Wosinska;Konstantinos Yiannopoulos

  • Affiliations:

  • Poznan University of Technology, Poznan, Poland 60965;The Royal Institute of Technology KTH, The School of Information and Communication Technology, Kista, Sweden 164 40;Poznan University of Technology, Poznan, Poland 60965;Poznan University of Technology, Poznan, Poland 60965;Athens Information Technology, Peania-Attica, Athens, Greece 19002;Athens Information Technology, Peania-Attica, Athens, Greece 19002;Department of Computer Engineering and Informatics, University of Patras Research Academic Computer Technology Institute, Rio, Greece 26500;Department of Computer Engineering and Informatics, University of Patras Research Academic Computer Technology Institute, Rio, Greece 26500;Poznan University of Technology, Poznan, Poland 60965;The Royal Institute of Technology KTH, The School of Information and Communication Technology, Kista, Sweden 164 40;Department of Computer Engineering and Informatics, University of Patras Research Academic Computer Technology Institute, Rio, Greece 26500

  • Venue:
  • Towards Digital Optical Networks
  • Year:
  • 2009

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Abstract

In this paper we discussed different switch architectures. We focus mainly on optical buffering. We investigate an all-optical buffer architecture comprising of cascaded stages of quantum-dot semiconductor optical amplifier- based tunable wavelength converters, at 160 Gb/s. We also propose the optical buffer with multi-wavelength converters based on quantum-dot semiconductor optical amplifiers. We present multistage switching fabrics with optical buffers, where optical buffers are based on fibre delay lines and are located in the first stage. Finally, we describe a photonic asynchronous packet switch and show that the employment of a few optical buffer stages to complement the electronic ones significantly improves the switch performance. We also propose two asynchronous optical packet switching node architectures, where an efficient contention resolution is based on controllable optical buffers and tunable wavelength converters TWCs.