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Proceedings Paper

Planar integrated free-space optics for optical interconnects and fan-out/in operations
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Paper Abstract

The advantages of optical interconnections, like low latency and large bandwidth, are currently becoming more important for on-board or multi-board systems. Clock distribution and data transfer with high channel density and high frequency over areas in order of several centimeters up to a few meters are of interest, e.g., in multi-processor systems. As an approach to solve the challenges of interconnections and fanning we investigate planar integrated free-space optical systems (PIFSO). In the "High-speed Opto-eLectronic Memory System" project (short: HOLMS), supported by the European Commission, a multi-processor system with optical processor memory interconnection is being demonstrated. The system combines different optics technologies. The PIFSO technology is used as the interface between opto-electronic components and optical fibers and/or PCB-embedded waveguides. The tasks of this interface are to realize the pitch transfer, e.g. from the waveguide array to the opto-electronic device array, fan-in and fan-out. To realize the different aspects of these tasks, suitable micro-optical imaging techniques and fan-out approaches are considered. To handle the large numerical aperture of the optical multimode field emerging from the VCSEL-diodes and the waveguides (up to around 0.2), the concept of pupil division is being investigated for the fan-out operation. Practical aspects such as footprint and tolerances are also considered. The feasibility of implementation of the PIFSO interconnect will be shown by means of simulations and experimental demonstration.

Paper Details

Date Published: 4 November 2004
PDF: 12 pages
Proc. SPIE 5556, Photonic Devices and Algorithms for Computing VI, (4 November 2004); doi: 10.1117/12.557175
Show Author Affiliations
Manfred Jarczynski, Univ. Hagen (Germany)
Juergen Jahns, Univ. Hagen (Germany)

Published in SPIE Proceedings Vol. 5556:
Photonic Devices and Algorithms for Computing VI
Khan M. Iftekharuddin; Abdul Ahad S. Awwal, Editor(s)

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