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Proceedings Paper

Smart multichip module communications using free-space optical interconnects
Author(s): David S. McCallum; Peter S. Guilfoyle
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Paper Abstract

Free-space optical interconnects are an attractive method for providing data channels between the chips in a multichip module because free-space optical interconnects offer the promise of lower energy, higher bandwidth data pathways than are possible with electronics. In this paper, we describe the range of operating conditions in which free-space optical interconnects offer a performance improvement over conventional electronic interconnects and over other optical interconnection techniques. The high performance optoelectronic computing (HPOC) module architecture is suitable for chip-to-chip communications in a multichip module. We show that, in addition to simply transferring data between chips or performing clock distribution, the HPOC module architecture can be used to perform calculations. It is necessary to modify the optical design of the HPOC module to make it conform to the coplanar geometry of the multichip module. An estimate is made of the performance capabilities of the HPOC module for data pipeline, clock distribution, and data routing in multichip modules. Finally, we show that multichip modules equipped with optical interconnects can be used for switching and data routing applications.

Paper Details

Date Published: 30 January 1996
PDF: 20 pages
Proc. SPIE 10284, Optoelectronic Interconnects and Packaging: A Critical Review, 1028405 (30 January 1996); doi: 10.1117/12.229280
Show Author Affiliations
David S. McCallum, OptiComp Corp. (United States)
Peter S. Guilfoyle, OptiComp Corp. (United States)


Published in SPIE Proceedings Vol. 10284:
Optoelectronic Interconnects and Packaging: A Critical Review
Ray T. Chen; Peter S. Guilfoyle, Editor(s)

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