caa a22 4500 445871172 CHVBK 20180317145512.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s11107-010-0293-8 doi (NATIONALLICENCE)springer-10.1007/s11107-010-0293-8 Hamza Haitham Department of Information Technology, Faculty of Computes and Information, Cairo University, Giza, Egypt aut A scalable optical WDM multicast Beneš network with multi-channel wavelength converters [Elektronische Daten] [Haitham Hamza] An optical wavelength division multiplexing (WDM) multicast network interconnects an input signal on a given wavelength to one or more output fibers, possibly on different wavelengths (via wavelength conversion), while maintaining the signal in the optical domain. A key challenge in the design of scalable multicast networks is to reduce conversion complexity without affecting the switching capability and signal quality. In this article, we propose a scalable WDM multicast Beneš interconnection network with minimized conversion complexity. The proposed network is based on the Copy-and-Route architecture, and it uses multi- channel WCs (MCWCs) for wavelength conversion. The conversion complexity of the proposed design is O(F log2 W) (where F is the number of fibers and W is the number of wavelengths per fiber), which is smaller than the O(FW) complexity of the optimal design based on conventional single-channel WCs (SCWCs). We prove that, for W > 64 and for any value of F, the conversion complexity of the new design is strictly less than that of the optimal SCWC-based design regardless of the total number of wavelengths simultaneously converted by each MCWCs. Analyzes of conversion complexity of the proposed design for large values of W confirm considerable savings compared to the optimal SCWC-based design. For instance, for W=256 and an for an arbitrary value of F, a practical implementation of the proposed design achieves 87% reduction in conversion complexity as compared to the optimal SCWC-based design. Springer Science+Business Media, LLC, 2010 Wavelength division multiplexing nationallicence Optical switching nationallicence Optical multicast nationallicence Beneš network nationallicence Multi-channel wavelength converters nationallicence Wave-mixing switching networks nationallicence Photonic Network Communications Springer US; http://www.springer-ny.com 21/2(2011-04-01), 201-213 1387-974X 21:2<201 2011 21 11107 https://doi.org/10.1007/s11107-010-0293-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11107-010-0293-8 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Hamza Haitham Department of Information Technology, Faculty of Computes and Information, Cairo University, Giza, Egypt aut NATIONALLICENCE 773 0- Photonic Network Communications Springer US; http://www.springer-ny.com 21/2(2011-04-01), 201-213 1387-974X 21:2<201 2011 21 11107 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer