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Optical fiber random grating-based multiparameter sensor
  • Affiliation of Author(s):
    University of Ottawa
  • Journal:
    Optics Letters
  • Abstract:
    A novel multiparameter fiber-optic sensor based on a femtosecond laser micromachined random grating is proposed and demonstrated to realize simultaneous measurement of temperature, axial strain, and surrounding refractive index. A wavelength-division spectral cross-correlation algorithm is adopted to extract the phase variation induced spectral shift responding to different external disturbances. Sensitivities of 10.32 pm/°C, 1.24 pm/με, and −1520.6  pm/RIU were achieved for temperature, axial strain, and surrounding refractive index, respectively. The fiber random grating without phase mask fabrication and high physical strength is an excellent alternative aiming at simple and compact multifunctional fiber sensors.
  • All the Authors:
    Song Gao,Dao Xiang,Ping Lu,Stephen Mihailov
  • First Author:
    Yanping Xu
  • Indexed by:
    Journal paper
  • Correspondence Author:
    Ping Lu,Xiaoyi Bao
  • Discipline:
    Engineering
  • First-Level Discipline:
    Optical Engineering
  • Document Type:
    J
  • Volume:
    40
  • Issue:
    23
  • Page Number:
    5514-5517
  • Translation or Not:
    no
  • Included Journals:
    SCI
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