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Related Concept Videos

Echo01:06

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The human ear cannot distinguish between two sources of sound if they happen to reach within a specific time interval, typically 0.1 seconds apart. More than this, and they are perceived as separate sources.
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Related Experiment Video

Updated: Jul 1, 2026

Bringing the Visible Universe into Focus with Robo-AO
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Published on: February 12, 2013

Optical proximity communication using reflective mirrors.

Xuezhe Zheng1, John E Cunningham, Ivan Shubin

  • 1Sun Microsystems Inc, 9515 Towne Centre Dr, San Diego, CA 92121, USA. xuezhe.zheng@sun.com

Optics Express
|September 17, 2008
PubMed
Summary
This summary is machine-generated.

Optical proximity communication (OPxC) offers a broadband solution for silicon chips using reflecting mirrors. This technology achieves high-bandwidth density I/O, significantly outperforming traditional electrical connections.

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Area of Science:

  • Optoelectronics
  • Silicon Photonics
  • Optical Communication

Background:

  • Traditional electrical interconnects face limitations in bandwidth and signal integrity for high-speed data transmission.
  • The increasing demand for higher data rates in computing necessitates novel communication solutions.

Purpose of the Study:

  • To present optical proximity communication (OPxC) utilizing reflecting mirrors for chip-to-chip interconnects.
  • To demonstrate the feasibility of OPxC for high-speed optical transmission with minimal signal impairment.

Main Methods:

  • Implementation of direct optical links between silicon chips using reflecting mirrors.
  • Characterization of coupling loss and signal integrity for the OPxC system.

Main Results:

  • Demonstrated direct optical links with coupling loss better than -2.5dB (excluding surface losses).
  • Confirmed OPxC as a broadband solution with minimal signal integrity impairment for high-speed optical transmission.
  • Achieved significantly higher bandwidth density I/O using wavelength division multiplexing (WDM) enabled OPxC compared to traditional electrical I/O.

Conclusions:

  • Optical proximity communication (OPxC) is a viable technology for high-bandwidth density I/O in silicon chips.
  • OPxC, particularly with WDM, offers a scalable and efficient solution for future optical interconnects.