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Updated: May 23, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Characterizing a fiber-based frequency comb with electro-optic modulator.

Wei Zhang1, Michel Lours, Marc Fischer

  • 1Laboratoire National de Métrologie et Essais-Systèmes de Référence Temps et Espace (LNE-SYRTE), Observatoire de Paris, Centre National de la Recherche Scientifique, Université Pierre et Marie Curie, Paris, France.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
|April 7, 2012
PubMed
Summary
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This study characterizes a fiber-based frequency comb with an electro-optic modulator (EOM). Using a low-noise supply significantly reduced relative intensity noise (RIN), enabling low-phase-noise microwave signal generation.

Area of Science:

  • Optics and Photonics
  • Laser Physics
  • Frequency Metrology

Background:

  • Fiber-based frequency combs are crucial for precise measurements.
  • Characterizing noise sources and stabilization techniques is essential for advanced applications.
  • Electro-optic modulators (EOMs) offer potential for controlling comb parameters.

Purpose of the Study:

  • To characterize a commercial fiber-based frequency comb with an intracavity EOM.
  • To investigate the impact of pump diode noise on laser relative intensity noise (RIN).
  • To assess the EOM's capability for stabilizing the comb's repetition rate and generating low-noise microwave signals.

Main Methods:

  • Utilized a commercial fiber-based frequency comb with an intracavity EOM.
  • Investigated pump diode noise effects on laser RIN.

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  • Employed a low-noise current supply to mitigate RIN.
  • Measured critical transfer functions to evaluate EOM performance for repetition rate stabilization.
  • Analyzed coupling to other comb parameters.

    • Main Results:

    • Demonstrated substantial reduction in laser RIN using a low-noise current supply.
    • Evaluated the EOM's transfer functions for repetition rate stabilization.
    • Assessed parameter coupling within the frequency comb.
    • Inferred the potential for generating very-low-phase-noise microwave signals.

    Conclusions:

    • The characterized fiber-based frequency comb with an EOM shows promise for advanced applications.
    • Effective RIN reduction is achievable with appropriate pump diode control.
    • The EOM is a viable component for stabilizing comb repetition rates.
    • The system is capable of producing high-quality, low-phase-noise microwave signals when phase-locked to an ultra-stable laser.