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Cross-sectional view of an IBM Silicon Nanophotonics chip combining optical and electrical circuits

An IBM 90nm Silicon Integrated Nanophotonics technology is capable of integrating a photodetector (red feature on the left side of the cube) and modulator (blue feature on the right side) fabricated side-by-side with silicon transistors ( red sparks on the far right).

 

Silicon Nanophotonics circuits and silicon transistors are interconnected with nine levels of yellow metal wires.

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Taken on December 5, 2012