• DocumentCode
    989821
  • Title

    ESR study on loss increase of 500°C heat-treated Ge-doped optical fibres

  • Author

    Nakahara, Mizuki ; Ohmori, Yutaka ; Itoh, Hayato

  • Author_Institution
    NTT Ibaraki Electrical Communication Laboratory, Tokai, Japan
  • Volume
    19
  • Issue
    23
  • fYear
    1983
  • Firstpage
    1004
  • Lastpage
    1006
  • Abstract
    Spectral changes of ESR signals due to germanium associated Ge(3) centres were observed on heat-treated optical fibres and preforms. The defect centres essentially exist in as-drawn fibres, even if preforms have been oxidised prior to drawing. The 500°C heat treatment of Ge-doped fibres caused a remarkable decrease in the ESR intensity of Ge(3) centres, subsequently causing optical loss increase around the 1.39 ¿m wavelength.
  • Keywords
    germanate glasses; heat treatment; losses; optical fibres; paramagnetic resonance of defects; silicon compounds; 1.39 micron wavelength; 500°C; ESR study; Ge doping; Ge(3) centres; SiO2-GeO2; defect centres; electron spin resonance; germanate glasses; heat treatment; optical fibres; optical loss; preforms; silica glass;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:19830682
  • Filename
    4248228
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=989821