• DocumentCode
    928494
  • Title

    Triple layer refractive index profile for tapered fibre beam expanders

  • Author

    Tammela, T. ; Poyhonen, P. ; Tervonen, A.

  • Author_Institution
    Tech. Res. Centre of Finland, Espoo, Finland
  • Volume
    25
  • Issue
    18
  • fYear
    1989
  • Firstpage
    1205
  • Lastpage
    1206
  • Abstract
    A triple layer index profile for tapered fibre beam expanders is designed. It is shown that it reduces the coupling losses between two unequal circular waveguides when compared to the use of a single-layer index profile. It is also shown that the ellipticity of the modal field can be changed simultaneously with the size of the modal field using this triple layer profile.
  • Keywords
    optical couplers; optical fibres; refractive index; coupling losses reduction; modal field ellipticity; modal field size; optical fibre couplers; refractive index profile; tapered fibre beam expanders; triple layer index profile; unequal circular waveguides;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:19890808
  • Filename
    43472
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=928494