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Proceedings Paper

Multi-Gb/s optical interconnect
Author(s): Jon R. Sauer
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Paper Abstract

The National Science Foundation has granted funding to the Centerfor Optoelectronic Computing Systems located in Boulder, Colorado. A new initiative has been undertaken there in collaboration with the Center for Telecommunications Research at Columbia University. This project is to design and build a multi-GHz optoelectronic data transport network using self-routing packets in a multi-hop network. The single electronic word packet payloads are highly compressed using optical techniques, and remain optical from source to target while traversing the switching nodes. Optical packet switching is performed with custom LiNbO3 directional coupler switches. The routing is done with a lean, self-routing hot potato protocol in order to avoid the need for data storage at the switching nodes and to provide a fixed node latency equivalent to a few meters of fiber. Sustainable throughput both in to and out of Ihe electronic host at each node should exceed 1 Gb/s, with bursts close to the 10-100 Gb/s peak link bandwidth. Some technical details of the optical compression and decompression schemes, the hot potato switching protocol, and the wrap-around shuffleexchange interconnection network will be given. The project timetable anticipates a lower speed, proof-of-principle four node network in three years, and a higher speed, larger, engineering demonstration in five years. The project received NSF funding in September 1989.

Paper Details

Date Published: 1 July 1990
PDF: 10 pages
Proc. SPIE 1215, Digital Optical Computing II, (1 July 1990); doi: 10.1117/12.18065
Show Author Affiliations
Jon R. Sauer, Univ. of Colorado/Boulder and AT&T Bell Labs. (United States)

Published in SPIE Proceedings Vol. 1215:
Digital Optical Computing II
Raymond Arrathoon, Editor(s)

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