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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 2 — Jan. 10, 2004
  • pp: 463–470

Multichip module with planar-integrated free-space optical vector-matrix-type interconnects

Matthias Gruber  »View Author Affiliations


Applied Optics, Vol. 43, Issue 2, pp. 463-470 (2004)
http://dx.doi.org/10.1364/AO.43.000463


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Abstract

Even in the semiconductor industry, free-space optical technology is nowadays seen as a prime option for solving the continually aggravating problem with VLSI chips, namely, that the interconnect technology has failed to keep pace with the increase in communication volume. To make free-space optics compatible with established lithography-based design and fabrication techniques the concept of planar integration was proposed approximately a decade ago. Here its evolution into a photonic microsystems engineering concept is described. For demonstration, a multichip module with planar-integrated free-space optical vector-matrix-type interconnects was designed and built. It contains flip-chip-bonded vertical-cavity surface emitting laser arrays and a hybrid chip with an array of multiple-quantum-well p-i-n diodes on top of a standard complementary metal-oxide semiconductor circuit as key optoelectronic hardware components. The optical system is integrated into a handy fused-silica substrate and fabricated with surface-relief diffractive phase elements. It has been optimized for the given geometrical and technological constraints and provides a good interconnection performance, as was verified in computer simulations on the basis of ray tracing and in practical experiments.

© 2004 Optical Society of America

OCIS Codes
(050.1380) Diffraction and gratings : Binary optics
(200.4650) Optics in computing : Optical interconnects
(200.4860) Optics in computing : Optical vector-matrix systems
(220.0220) Optical design and fabrication : Optical design and fabrication

History
Original Manuscript: March 22, 2003
Published: January 10, 2004

Citation
Matthias Gruber, "Multichip module with planar-integrated free-space optical vector-matrix-type interconnects," Appl. Opt. 43, 463-470 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-2-463


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