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kHz-precision wavemeter based on reconfigurable microsoliton.

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A new method stabilizes microcombs, crucial for optical communications and AI. This technique precisely controls comb frequency, enhancing applications in spectroscopy and sensing.

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Area of Science:

  • Photonics
  • Quantum Optics

Background:

  • Mode-locked microcombs are compact photonic solutions for diverse applications.
  • Environmental thermal noise and nonlinear effects cause microcomb frequency instability.

Purpose of the Study:

  • To propose and experimentally verify a universal mechanism for fully stabilizing microcombs.
  • To achieve independent, real-time control of pump laser frequency and microcomb repetition rate.

Main Methods:

  • Incorporation of two global tuning approaches.
  • Implementation of an autonomous thermal locking mechanism.
  • Real-time control without interrupting microcomb generation.

Main Results:

  • Demonstrated a universal mechanism for microcomb stabilization.
  • Achieved independent control of pump laser frequency and repetition rate.
  • Enabled wavelength measurement with ~1 kHz precision.

Conclusions:

  • The developed approach offers full control over microcomb frequency.
  • This method can enhance performance in timing, spectroscopy, and sensing applications.
  • The stabilization technique is applicable to various microcomb platforms.