• DocumentCode
    1044666
  • Title

    Photoconductivity measurements in optical fibre preforms

  • Author

    Lan, Qian ; Osterberg, U.

  • Author_Institution
    Thayer Sch. of Eng., Dartmouth Coll., Hanover, NH, USA
  • Volume
    29
  • Issue
    4
  • fYear
    1993
  • Firstpage
    359
  • Lastpage
    360
  • Abstract
    The AC photoconductivity and the photodielectric shift in UV-illuminated germano-silicate preforms and optical fibres has been measured using a noncontact microwave resonator technique at 2.9 GHz. The highest photoconductivity measured was 1.5*10-6 ( Omega cm)-1 and the largest measured photodielectric shift corresponded to an increase of the refractive index of 1.6*10-2. A permanently induced increase of the refractive index, 6.1*10-3, was also observed. The dark DC conductivity was measured to be 10-15 ( Omega cm)-1.
  • Keywords
    germanate glasses; optical fibres; photoconductivity; silicon compounds; AC photoconductivity; GeO 2-SiO 2; UV-illuminated germano-silicate preforms; capacitance technique; dark DC conductivity; noncontact microwave resonator technique; optical fibre preforms; photodielectric shift; refractive index;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:19930242
  • Filename
    274769
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1044666