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Physica C Superconductivity

Sate-of-the-art IP switching router architecture using SFQ technology

Noriharu Miyaho, Kazunori Miyahara, A. Yamazaki

Published Jul 19, 2006• 4 citations
Publisher
DOI
10.1016/j.physc.2006.05.094

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Large-scale telecommunication systems in nationwide networks will require routers having a packet switching throughput capacity of over several-tens of Tb/s. In such future high-end routers, packet switches will need higher processing speeds than semiconductor devices can provide. We have demonstrated a 40 GHz clock, 0.8 mW, 160 Gb/s, 4/spl times/4 switch circuit that uses single flux quantum (SFQ) technology. The main components of an SFQ circuit are Josephson junctions and a superconducting loop. In designing the circuit, we have developed two key technologies: an automatic cell placement and route tool to increase designable circuit scale; a passive interconnection to decrease latency. These technologies will enable implementing Tb/s-scale switches and switch schedulers for high-speed packet switching systems.