• DocumentCode
    948962
  • Title

    Parallel-beam excitation method for estimating refractive-index profiles in optical fibres

  • Author

    Ankiewicz, A. ; Adams, M.J. ; Payne, David N. ; Sladen, F.M.E.

  • Author_Institution
    University of Southampton, Department of Electronics, Southampton, UK
  • Volume
    14
  • Issue
    25
  • fYear
    1978
  • Firstpage
    811
  • Lastpage
    812
  • Abstract
    A theoretical model is developed that demonstrates the presence of a ring in the far-field pattern when a graded-index fibre is excited by a collimated beam, incident at a given radius from the core centre. The angular position of tnis ring can be used to obtain an estimate of the fibre refractive-index profile, provided a correction for the finite beam spot size is applied.
  • Keywords
    optical fibres; refractive index; angular position; collimated beam; far field pattern; finite beam spot; graded index fibre; optical fibres; parallel beam excitation method; refractive index profile; ring;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:19780547
  • Filename
    4242944
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=948962