Scalable architectures for all-optical label swapping nodes

All-Optical Label Swapping (AOLS) nodes are believed to be part of the future networks. The original node designs, however, are very hard scalable. This article presents three alternatives that swap labels analogous to the original design. Two of the proposed new switches use the same all-optical technology to parallelly compare labels but, they divide fibres in data wavelengths that only transport payloads and label wavelengths that only transport labels. The third design sequentially compares the incoming label with addresses in the node available in order to make the routing decision. All three architectures are compared in terms of hardware necessary to perform routing.

[1]  Didier Colle,et al.  Pan-European Optical Transport Networks: An Availability-based Comparison , 2004, Photonic Network Communications.

[2]  Ross W. Callon,et al.  Evolution of multiprotocol label switching , 1998, IEEE Commun. Mag..

[3]  P. Demeester,et al.  Resilience in all-optical label swapping networks , 2006, 2006 Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference.

[4]  G. Theophilopoulos,et al.  All-optical packet address and payload separation , 2002, IEEE Photonics Technology Letters.

[5]  G. Theophilopoulos,et al.  Clock recovery circuit for optical packets , 2002, IEEE Photonics Technology Letters.

[6]  Richard V. Penty,et al.  Wavelength striped semi-synchronous optical local area networks , 2003 .

[7]  Alistair James Poustie,et al.  40 Gbit/s all-optical XOR gate based on hybrid-integrated Mach-Zehnder interferometer , 2003 .

[8]  E. Zouganeli,et al.  Techno-economic evaluation of optical packet/ burst switching , 2005 .

[9]  J. Marti,et al.  IST-LASAGNE: towards all-optical label swapping employing optical logic gates and optical flip-flops , 2005, Journal of Lightwave Technology.

[10]  Gigi Karmous-Edwards,et al.  An optical control plane for the grid community: opportunities, challenges, and vision , 2006, IEEE Communications Magazine.

[11]  M. Pickavet,et al.  Optical packet switches based on a single arrayed waveguide grating , 2003, Workshop on High Performance Switching and Routing, 2003, HPSR..

[12]  H. Avramopoulos,et al.  All-optical XOR in a semiconductor optical amplifier-assisted fiber Sagnac gate , 1999, IEEE Photonics Technology Letters.

[13]  Didier Colle,et al.  Benefits of label stripping compared to label swapping from the point of node dimensioning , 2006, Photonic Network Communications.