Self-locked optical parametric oscillation in a CMOS compatible microring resonator: a route to robust optical frequency comb generation on a chip

Alessia Pasquazi, Lucia Caspani, Marco Peccianti, Matteo Clerici, Marcello Ferrera, Luca Razzari, David Duchesne, Brent E. Little, Sai T. Chu, David J. Moss, Roberto Morandotti

Research output: Contribution to journalArticlepeer-review

82 Citations (Scopus)


We report a novel geometry for OPOs based on nonlinear microcavity resonators. This approach relies on a self-locked scheme that enables OPO emission without the need for thermal locking of the pump laser to the microcavity resonance. By exploiting a CMOS-compatible microring resonator, we achieve oscillation featured by a complete absence of 'shutting down', i.e. the self-terminating behavior that is a very common and detrimental occurrence in externally pumped OPOs. Further, our scheme consistently produces very wide bandwidth (>300nm, limited by our experimental set-up) combs that oscillate at a spacing equal to the FSR of the micro cavity resonance.

Original languageEnglish
Pages (from-to)13333-13341
Number of pages9
JournalOptics Express
Issue number11
Publication statusPublished - 3 Jun 2013


  • cavity resonators
  • optical resonators
  • CMOS compatible
  • microcavity resonator
  • optical frequency comb generation
  • optical para,etric oscillations
  • pump laser
  • thermal locking
  • wide bandwidth

Cite this