• DocumentCode
    839132
  • Title

    Highly Sensitive Photonic Crystal Fiber-Based Refractive Index Sensing Using Mechanical Long-Period Grating

  • Author

    Yu, X. ; Shum, P. ; Ren, G.B.

  • Author_Institution
    Singapore Inst. of Manuf. Technol., Singapore
  • Volume
    20
  • Issue
    20
  • fYear
    2008
  • Firstpage
    1688
  • Lastpage
    1690
  • Abstract
    We experimentally demonstrate a novel refractive index (RI) sensor with the measurand infiltrated into the air channels of a single mode photonic crystal fiber (PCF). A tunable long-period grating is formed in a short length of PCF by use of the periodic mechanical pressure. Resonance shift with the change of the infiltrated liquid is observed with a sensitivity of 4.1times 10-6 RI unit in a refractive index range from 1.32 to 1.39. The thermal stability of the pure-silica-based PCF device shows a three times better performance compared with conventional single mode fiber.
  • Keywords
    diffraction gratings; fibre optic sensors; optical tuning; photonic crystals; refractive index; refractive index measurement; thermal stability; PCF; SiO2; infiltrated liquid; mechanical long-period grating; periodic mechanical pressure; photonic crystal fiber; refractive index sensing; resonance shift; thermal stability; Fiber sensor; photonic crystal fiber; refractive index sensor;
  • fLanguage
    English
  • Journal_Title
    Photonics Technology Letters, IEEE
  • Publisher
    ieee
  • ISSN
    1041-1135
  • Type

    jour

  • DOI
    10.1109/LPT.2008.2003376
  • Filename
    4602712
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=839132