• DocumentCode
    737867
  • Title

    Optical Fiber Fabry–Perot Humidity Sensor Based on Porous Al2O3 Film

  • Author

    Huang, Chujia ; Xie, Weijing ; Yang, Minghong ; Dai, Jixiang ; Zhang, Bo

  • Author_Institution
    National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan, China
  • Volume
    27
  • Issue
    20
  • fYear
    2015
  • Firstpage
    2127
  • Lastpage
    2130
  • Abstract
    An optical fiber humidity sensor with porous anodic alumina (PAA) film on single-mode fiber tip is proposed and experimentally demonstrated. Relative-humidity (RH) sensing is correlated with the shift of interference fringe due to capillary condensation, which results in the change of effective refractive index of PAA film when exposed to different RH environments. Experimental result shows that sensitivity of 0.31 nm/%RH can be realized with very good repeatability in range of 20%RH–90%RH. It can be concluded that fiber-optic RH sensors with PAA film of thinner thickness, smaller aperture size, and aspect ratio would present promising sensing performance.
  • Keywords
    Films; Humidity; Optical fiber sensors; Optical fibers; Probes; Sensitivity; Fabry-Perot interferometer; Optical fiber sensors; Porous anodic alumina film; optical fiber sensors; porous anodic alumina film; relative-humidity;
  • fLanguage
    English
  • Journal_Title
    Photonics Technology Letters, IEEE
  • Publisher
    ieee
  • ISSN
    1041-1135
  • Type

    jour

  • DOI
    10.1109/LPT.2015.2454271
  • Filename
    7152877
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=737867