Bi-Directional mode-locked thulium fiber laser as a single-cavity dual-comb source

J. Olson, Y. H. Ou, A. Azarm, K. Kieu

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


We demonstrate the use of a bi-directional mode-locked thulium doped fiber ring laser as a single cavity free-running dual-comb source. We consider the effect of group-velocity dispersion on the repetition rate difference between the two combs and demonstrate a tunable repetition rate difference from 48-229 Hz. Dual-comb spectroscopy of atmospheric H2O near 1.87 μm is performed over a 1.47-m air path in laboratory with a peak single-shot signal-to-noise ratio of 27.5.

Original languageEnglish (US)
Article number8456546
Pages (from-to)1772-1775
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number20
StatePublished - Oct 15 2018


  • Fiber lasers
  • atmospheric measurements
  • fiber nonlinear optics
  • infrared spectra
  • laser applications
  • optical fibers
  • optical sensors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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