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Photonic pulse compressor on CMOS primed for OTDM

Posted: 02 Dec 2010     Print Version  Bookmark and Share

Keywords:CMOS  silicon photonic pulse compressor  OTDM 

University of California at San Diego (UCSD) researchers showcased silicon photonic pulse compressors on CMOS chips claiming it the first CMOS implementation strong enough for optical time division multiplexing (OTDM).

To be used for optical time division multiplexing (OTDM) in future on-chip silicon photonics, the pulse compressor design used a dispersive optical grating to generate short, powerful communications pulses on a CMOS chip.

Future CMOS chips will communicate over optical interconnects, using pulse compressors and other on-chip photonic components to aggregate individual data channels into high-speed optical signals. Besides speeding up the interconnect over copper wires, optical signals also reduce power consumption and run cooler than electrical signals. The compressed pulses aggregated by UCSD's device were seven-times shorter than the pulses in the original signals.

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