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Optoelectronic Systems Based on InGaAs- Complementary-Metal-Oxide-Semiconductor Smart-Pixel Arrays and Free-Space

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|February 15, 2008

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Future parallel computing systems can utilize free-space optical interconnects. This research demonstrates InGaAs-CMOS smart pixels enabling high-speed data sorting for advanced computing applications.

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Area of Science:

Optoelectronics
Parallel Computing
Semiconductor Devices

Background:

Massively parallel computing systems require advanced interconnect technologies.
Free-space optical interconnects offer a promising solution for high-speed data transfer.
Integration of optoelectronic devices with complementary metal-oxide-semiconductor (CMOS) circuits is crucial for next-generation computing.

Purpose of the Study:

To develop and demonstrate optoelectronic smart pixels for free-space optical interconnects.
To design and construct an experimental processor utilizing these smart pixels.
To validate the performance of the developed technology for parallel data sorting.

Main Methods:

Development of InGaAs/AlGaAs multiple-quantum-well modulators and detectors.
Flip-chip solder-bump bonding of optoelectronic devices onto CMOS circuits.
Design and implementation of a parallel data-sorting system using Batcher's bitonic sorting algorithm and perfect-shuffle optical interconnection.

Main Results:

Demonstrated InGaAs-CMOS smart-pixel chip-to-chip communication at 50 Mbits/s.
The experimental processor linked by free-space optical interconnects shows potential for high-performance data sorting.
The system has the potential to sort 1024, 16-bit words in under 16 microseconds.

Conclusions:

The developed InGaAs-CMOS smart-pixel technology meets initial system specifications for free-space optical interconnects.
This technology is a viable candidate for enabling future massively parallel-computing systems.
The successful demonstration of high-speed data sorting validates the potential of free-space optical interconnects.