System demonstration of a multigigabit network switch

Author

Dubash, Noshir B. ; Borzenets, Valery V. ; Zhang, Yongming M. ; Kaplunenko, Vsevolod ; Spargo, John W. ; Smith, A.D. ; Van Duzer, Theodore

Author_Institution

Conductus Inc., Sunnyvale, CA, USA

Volume

48

Issue

7

fYear

2000

fDate

7/1/2000 12:00:00 AM

Firstpage

1209

Lastpage

1215

Abstract

4×4 single-flux-quantum (SFQ) network switch has been packaged and successfully demonstrated in a hybrid closed-cycle refrigerator (CCR) system at multigigabit data rates. Full operation of the packaged switch, with self-routing of 1-Gb/s data packets, was demonstrated using a 1-GHz address header decode. The switch is packaged on a superconducting multichip module (MCM) mounted on the 4.5-K stage of the CCR. On-chip asynchronous Josephson drivers and cooled GaAs preamplifiers are used to amplify the SFQ outputs of the switch. The maximum operation bandwidth of the switch is currently limited by the asynchronous Josephson driver. New designs of the Josephson drivers, which have demonstrated operation at 10 Gb/s, are expected to enable switch operation at 10 Gb/s. The system is equipped with fiber-optical inputs and high-speed cryogenic photodetectors. The fiber-optic interfaces, RF packaging, and MCM packaging in the CCR system have demonstrated error-free operation at 10 Gb/s

Keywords

Josephson effect; cryogenic electronics; driver circuits; optical fibre networks; optical switches; packet switching; superconducting junction devices; superconducting switches; 1 GHz; 10 Gbit/s; 4 Gbit/s; 4.5 K; SFQ outputs; address header decode; fiber-optical inputs; high-speed cryogenic photodetectors; hybrid closed-cycle refrigerator; maximum operation bandwidth; multigigabit network switch; on-chip asynchronous Josephson drivers; self-routing; single-flux-quantum switch; superconducting multichip module; switch operation; Bandwidth; Decoding; Gallium arsenide; Multichip modules; Packaging; Packet switching; Preamplifiers; Refrigeration; Superconducting photodetectors; Switches;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.853461

Filename

853461