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Related Experiment Video

Updated: Sep 16, 2025

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

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Integrated multi-port multi-wavelength coherent optical source for beyond Tb/s optical links.

Ali Pirmoradi1, Jizhao Zang2,3, Kaisarbek Omirzakhov1

  • 1Department of Electrical and Systems Engineering, University of Pennsylvania, Philadelphia, PA, USA.

Nature Communications
|July 10, 2025
PubMed
Summary

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This summary is machine-generated.

This study presents a novel microcomb-based multi-wavelength source for data centers. It achieves ultra-low power consumption for optical frequency comb demultiplexing, enhancing energy efficiency in AI systems.

Area of Science:

  • Photonics and Optical Engineering
  • Integrated Optics
  • Data Communication

Background:

  • Optical frequency combs (microcombs) are crucial for large-scale optical links in data centers and AI.
  • Existing demultiplexers often have high power consumption, limiting scalability.
  • Autonomous tracking of comb lines is essential for stable optical communication.

Purpose of the Study:

  • To demonstrate a multi-wavelength multi-port source using a Kerr microcomb and an integrated demultiplexer.
  • To achieve autonomous locking and tracking of microcomb lines.
  • To significantly reduce the power and energy consumption of wavelength demultiplexing.

Main Methods:

  • Utilized a soliton microcomb with 200 GHz mode-spacing and 53% efficiency.

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Last Updated: Sep 16, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs
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07:45

Quasi-light Storage for Optical Data Packets

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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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  • Implemented Mach-Zehnder interferometer- and ring resonator-based wavelength demultiplexers.
  • Employed capacitive optical phase shifters with zero static power consumption and a single control unit.

    • Main Results:

    • Achieved a total demultiplexer power consumption of 2.4 mW.
    • Demonstrated record low demultiplexer energy consumption: 10 fJ/b (8-channel) and 2.5 fJ/b (32-channel) at 32 Gb/s/channel.
    • Successfully achieved autonomous locking and tracking of comb lines.

    Conclusions:

    • The developed microcomb-based source offers a significant improvement in demultiplexer energy efficiency.
    • This technology is highly promising for energy-efficient optical links in data centers and AI systems.
    • The autonomous tracking capability enhances the robustness of optical communication systems.