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Related Experiment Videos

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

Matthias Gruber1

  • 1Lehrgebiet Optische Nachrichtentechnik, Fern Universität Hagen, Universitätsstrasse 27, 58084 Hagen, Germany. matthias.gruber@fernuni-hagen.de

Applied Optics
|January 23, 2004
PubMed
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Planar integration of free-space optics offers a solution for VLSI chip interconnects. This photonic microsystem engineering approach demonstrates good performance for high-volume communication needs.

Area of Science:

  • Photonics
  • Microsystems Engineering
  • Semiconductor Technology

Background:

  • VLSI chip interconnects struggle to meet increasing communication demands.
  • Planar integration of free-space optics was proposed to align with lithography-based fabrication.
  • Evolution of free-space optics into a viable photonic microsystems engineering concept.

Purpose of the Study:

  • To describe the evolution of planar-integrated free-space optics.
  • To demonstrate a multichip module with planar-integrated free-space optical interconnects.
  • To verify interconnection performance through simulations and experiments.

Main Methods:

  • Designed and built a multichip module featuring planar-integrated free-space optical vector-matrix interconnects.
  • Utilized flip-chip-bonded vertical-cavity surface-emitting laser arrays and multiple-quantum-well p-i-n diodes.

Related Experiment Videos

  • Integrated optical system on a fused-silica substrate with surface-relief diffractive phase elements.

    • Main Results:

    • Demonstrated a functional multichip module with key optoelectronic components.
    • Optimized optical system for specific geometrical and technological constraints.
    • Achieved good interconnection performance verified by ray tracing simulations and experiments.

    Conclusions:

    • Planar-integrated free-space optics is a mature concept for advanced photonic microsystems.
    • This technology addresses critical interconnect bottlenecks in VLSI chip design.
    • The demonstrated module validates the practical application and performance of the approach.