Eikonal analyses are applied to a hybrid micro/macro-optical shuffle interconnection approach that minimizes distortion in a multichip smart-pixel shuffle interconnection system. The optical system uses off-axis imaging elements to link clusters of dense arrays of vertical-cavity surface-emitting laser (VCSEL) sources to matching clusters within arrays of detectors. A critical requirement for such a system is that the images of the two-dimensional arrays of the VCSELs must be registered on their associated detector arrays with a precision of the order of 10 μm across the entire multichip array. The hybrid approach exploits the typical narrow-beam cone angles of VCSELs by use of beam-deflecting micro-optics to create a distortion-canceling symmetry about a central aperture in the optical system for each VCSEL–detector link. The second- and third-order aberrations of the plane-symmetric system created by the global off-axis imaging system are analyzed. The results prove that the hybrid concept cancels distortion and minimizes the spot size at the detector array plane.
© 2002 Optical Society of America
(200.0200) Optics in computing : Optics in computing
(200.4650) Optics in computing : Optical interconnects
(220.0220) Optical design and fabrication : Optical design and fabrication
(220.3620) Optical design and fabrication : Lens system design
Marc P. Christensen, Predrag Milojkovic, and Michael W. Haney, "Analysis of a hybrid micro/macro-optical method for distortion removal in free-space optical interconnections," J. Opt. Soc. Am. A 19, 2473-2478 (2002)