Studies on strain and temperature characteristics of a slanted multimode fiber bragg grating and its application in multiwavelength fiber raman ring laser

Chun Liu Zhao, Zhaohui Li, M. S. Demokan, Xiufeng Yang, Wei Jin, Chao Lu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

17 Citations (Scopus)


Detailed strain and temperature characteristics of a 2° slanted multimode fiber Bragg grating (MFBG) are developed theoretically and observed experimentally. Results show that the strain and temperature sensitivities are almost the same for different transmission dips of the 2° slanted MFBG. Utilizing two characteristics of the 2° slanted MFBG, namely 1) resonant wavelength intensities strongly affected by excited mode propagating before the grating and 2) uniform strain sensitivities of different resonant wavelengths, a switchable and tunable multiwavelength fiber Raman ring laser is realized. The configuration is simple and multipurpose. Results show that the laser can generate single-, dual-, three-, four-, and five-wavelength lasing by switching between each operation if a mode scrambler (MS) that is inserted !n front of the slanted MFBG is adjusted; furthermore, a 4.2-nm continuous wavelength-tuning range is achieved by straining the slanted MFBG when the MS is fixed.
Original languageEnglish
Pages (from-to)2394-2399
Number of pages6
JournalJournal of Lightwave Technology
Issue number6
Publication statusPublished - 1 Jun 2006


  • Fiber Raman laser
  • Multiwavelength fiber laser
  • Slanted multimode fiber bragg gratings (MFBGs)
  • Wavelength switching
  • Wavelength tuning

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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