Photonic chip-based low-noise microwave oscillator

Abstract Numerous modern technologies are reliant on the low-phase noise and exquisite timing stability of microwave signals. Substantial progress has been made in the field of microwave photonics, whereby low-noise microwave signals are generated by the down-conversion of ultrastable optical references using a frequency comb 1–3 . Such systems, however, are constructed with bulk or fibre optics and are difficult to further reduce in size and power consumption. In this work we address this challenge by leveraging advances in integrated photonics to demonstrate low-noise microwave generation via two-point optical frequency division 4,5 . Narrow-linewidth self-injection-locked integrated lasers 6,7 are…

• NA
  National Aeronautics and Space Administration

  Award: 80NM0018D0004
• CI
  California Institute of Technology

  Award: 80NM0018D0004
• NI
  National Institute of Standards and Technology

  Award: 80NM0018D0004
• DA
  Defense Advanced Research Projects Agency

  Award: HR0011-22-2-0009
• JP
  Jet Propulsion Laboratory

  Award: 80NM0018D0004