Laser-Induced Dispersion with Stimulated Raman Scattering in Gas-Filled Optical Fiber

Haihong Bao, Wei Jin, Yinping Miao, Hoi Lut Ho

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)


Laser-induced dispersion provides an all-optical means for dynamically controlling light propagation. Previous works on dispersion control with a laser beam make use of Kerr non-linearity, electromagnetic-induced transparency, and stimulated Brillouin scattering in optical fibers. Here we report, for the first time to our knowledge, optically controllable dispersion with stimulated Raman scattering in a gas-filled hollow-core optical fiber and show that flexible dispersion tuning can be achieved by varying optical pump power and wavelength as well as gas concentration and pressure in the hollow core. As an example of application, we demonstrated the use of such laser-induced dispersion for high-sensitivity hydrogen detection and achieved a normalized detection limit of 17.4 ppm/(m·W) with dynamic range over four orders of magnitude.

Original languageEnglish
Article number8638513
Pages (from-to)2120-2125
Number of pages6
JournalJournal of Lightwave Technology
Issue number9
Publication statusPublished - 1 May 2019


  • Gas sensor
  • optical fiber sensor
  • Raman induced dispersion
  • Raman scattering

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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