Bi-directional Mode-locked Thulium Fiber Laser as a Single-cavity Dual-comb Source

J. Olson, Y. H. Ou, A. Azarm, Khanh Q Kieu

Research output: Contribution to journalArticle

6 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)
JournalIEEE Photonics Technology Letters
StateAccepted/In press - Sep 5 2018


  • atmospheric measurements
  • Fiber lasers
  • 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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