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Updated: May 30, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

320 Gbit/s wavelength conversion using four-wave mixing in quantum-dot semiconductor optical amplifiers.

Motoharu Matsuura1, Oded Raz, Fausto Gomez-Agis

  • 1COBRA Research Institute, Eindhoven University of Technology, P. O. Box 513, NL-5600 Eindhoven, The Netherlands. m.matsuura@uec.ac.jp

Optics Letters
|August 3, 2011
PubMed
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This study shows error-free wavelength conversion for high-speed signals using quantum-dot amplifiers. This breakthrough enables efficient 40 Gbit/s data extraction from 320 Gbit/s signals.

Area of Science:

  • Photonics and Optical Communications
  • Semiconductor Devices
  • Nonlinear Optics

Background:

  • Ultrahigh-speed optical communication systems demand efficient wavelength conversion technologies.
  • Current methods often face limitations in speed, accuracy, or complexity.
  • Quantum-dot semiconductor optical amplifiers offer unique nonlinear properties for optical signal processing.

Purpose of the Study:

  • To demonstrate all-optical wavelength conversion of ultrahigh-speed intensity-modulated signals.
  • To achieve error-free performance at high bit rates.
  • To utilize four-wave mixing in a quantum-dot semiconductor optical amplifier for this conversion.

Main Methods:

  • Employing four-wave mixing (FWM) as the core nonlinear process.

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Last Updated: May 30, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
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  • Utilizing a quantum-dot semiconductor optical amplifier (QD-SOA) as the nonlinear medium.
  • Modulating signals at an ultrahigh bit rate of 320 Gbit/s and extracting 40 Gbit/s tributaries.

    • Main Results:

    • Achieved error-free all-optical wavelength conversion.
    • Demonstrated performance at a total bit rate of 320 Gbit/s.
    • Measured an average power penalty of 3.4 dB for the extracted 40 Gbit/s tributaries compared to the original signal.

    Conclusions:

    • Quantum-dot semiconductor optical amplifiers are effective for all-optical wavelength conversion.
    • The demonstrated technique supports ultrahigh-speed optical signal processing.
    • This method shows promise for future high-capacity optical networks.