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Optical Engineering

Three-dimensionally interconnected multi-bus-line bidirectional optical backplane
Author(s): Gicherl Kim; Ray T. Chen
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Paper Abstract

The concept of a three-dimensionally interconnected optical backplane for a high-performance system containing multichip module boards, operating at 850 nm, is introduced. The backplane reported here employs 2-D vertical-cavity surface-emitting lasers (VCSELs) and photodetector arrays as transceivers. By integrating 250-^m-pitch 2-D VCSELs, microlenses, and photodetector arrays into our backplane design, we have demonstrated a multi-bus-line optical backplane and experimentally realized this architecture with 2-D VCSEL and detector arrays while using the third dimension as the signal-propagating direction. Such an approach greatly increases the aggregate bandwidth of the backplane. Packaging issues such as misalignment, cross talk, and signal-to- noise ratio are studied. Eye diagrams up to 1.5 GHz were obtained with clear eyes, and the frequency response of a single bus line shows a bandwidth of 2.5 THz.

Paper Details

Date Published: 1 September 1999
PDF: 7 pages
Opt. Eng. 38(9) doi: 10.1117/1.602207
Published in: Optical Engineering Volume 38, Issue 9
Show Author Affiliations
Gicherl Kim, Univ. of Texas/Austin (United States)
Ray T. Chen, Univ. of Texas/Austin (United States)


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