Mode field profile and polarization dependence of long period fiber gratings written by CO2laser

Yiping Wang, D. N. Wang, Wei Jin, Hoi Lut Ho, Jian Ju

Research output: Journal article publicationJournal articleAcademic researchpeer-review

10 Citations (Scopus)


Mode field profiles and polarization dependence in the CO2-laser-notched long period fiber gratings (LPFGs) were investigated in detail. Asymmetric field profile was demonstrated in the 2- and 3-dimensional far field patterns of the CO2-laser-notched LPFG, which experimentally verifies the previously-presented asymmetry of refractive index modulation within the cross section of the gratings. Polarization dependent loss (PDL) of the LPFG was measured via Mueller matrix method. The maximum PDL of 1.68 dB and the maximum polarization extinction ratio of 1.07 dB are observed in the LPFG.
Original languageEnglish
Pages (from-to)2522-2525
Number of pages4
JournalOptics Communications
Issue number9
Publication statusPublished - 1 May 2008


  • Asymmetry
  • CO laser 2
  • Fiber Bragg gratings
  • Long period fiber gratings
  • Mode field
  • Optical fiber sensors
  • Polarization dependent loss

ASJC Scopus subject areas

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

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