All-optical directional switching in bistable semiconductor-ring lasers

Andrea Trita, Gabor Mezosi, Maria Jose Latorre-Vidal, Marco Zanola, Michael Strain, Francesca Bragheri, Marc Sorel, Guido Giuliani

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


We investigate the operation of directionally bistable semiconductor-ring lasers as all-optical flip-flops. We demonstrate fast switching between the two lasing directions by injection of optical pulses acting as set and reset control signals with switching times as fast as 20 ps, delay times as short as 60 ps, and switching energy of 150 fJ.
Original languageEnglish
Pages (from-to)877-885
Number of pages9
JournalIEEE Journal of Quantum Electronics
Issue number10
Early online date23 Aug 2013
Publication statusPublished - 30 Sept 2013


  • optical bistability
  • integrated optics
  • optical signal processing
  • semiconductor lasers
  • optical pulses
  • cavity resonators


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