Science Advances

Supplementary Materials

This PDF file includes:

  • Section S1. Optical frequency comb sources
  • Section S2. Out-of-loop comb-line frequency noise measurement method
  • Section S3. Absolute linewidth measurement method
  • Section S4. Dual-comb source experiment
  • Section S5. Impact of acoustic noise, vibrations, and temperature fluctuations on the fiber delay line–based stabilization system
  • Fig. S1. Free-running frep phase noise PSD and locked fceo noise PSD of comb-A and comb-B.
  • Fig. S2. Experimental setup for out-of-loop optical phase noise measurement.
  • Fig. S3. Measured in-loop and out-of-loop optical phase noise of the fiber delay line–stabilized comb.
  • Fig. S4. Linewidth measurement at 1550 nm.
  • Fig. S5. Optical phase noise of the fiber delay line–stabilized dual-comb source.
  • Fig. S6. Relative linewidth measurement experiment between the comb and CW laser.
  • Fig. S7. Impact of acoustic shielding on the measured out-of-loop optical phase noise PSDs.
  • Fig. S8. Vibration sensitivity measurement.
  • Fig. S9. Comparison between the measured frequency noise PSDs (black) and the estimated frequency noise PSDs computed from the measured vibration PSDs (red).
  • Fig. S10. Frequency noise and vibration sensitivity reduction by a spring-mass mount.
  • References (34, 35)

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