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Related Experiment Video

Updated: May 31, 2026

Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

High contrast 40Gbit/s optical modulation in silicon.

D J Thomson1, F Y Gardes, Y Hu

  • 1Advanced Technology Institute, University of Surrey, Guildford, Surrey, UK. d.thomson@surrey.ac.uk

Optics Express
|July 1, 2011
PubMed
Summary
This summary is machine-generated.

Silicon-based optical modulators achieve 40 Gbit/s data rates, addressing bandwidth demands. These devices offer improved efficiency and reduced power consumption for optical data transmission.

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Area of Science:

  • Photonics and Optical Engineering
  • Materials Science (Silicon Photonics)

Background:

  • Electrical data interconnects face limitations due to increasing bandwidth demands.
  • Optical domain data transmission is crucial for future high-speed communication.
  • Optical modulators are essential components for enabling higher data rates.

Purpose of the Study:

  • To demonstrate silicon-based optical modulators capable of high-speed operation.
  • To evaluate the performance of these modulators in terms of data rate and extinction ratio.
  • To assess the efficiency and optical loss characteristics of the phase shifter.

Main Methods:

  • Fabrication of silicon-based optical modulator devices with lengths of 3.5mm and 1mm.
  • Testing device performance at a data rate of 40 Gbit/s.
  • Measurement of extinction ratios, phase shifter efficiency, and optical loss.

Main Results:

  • Demonstrated silicon-based optical modulators operating at 40 Gbit/s.
  • Achieved extinction ratios of up to 10dB (3.5mm device) and 3.5dB (1mm device).
  • Phase shifter efficiency measured at 2.7V.cm with optical loss of 4dB/mm (4.5dB/mm including waveguide loss).

Conclusions:

  • Silicon photonics technology can support high-speed optical modulation at 40 Gbit/s.
  • Device length impacts extinction ratio, with longer devices showing better performance.
  • The demonstrated modulators show promise for efficient and high-bandwidth optical data transmission.