• DocumentCode
    1115463
  • Title

    An acoustooptical directional coupler for an optical time-domain reflectometer

  • Author

    Horiguchi, Tsuneo ; Nakazawa, Masataka ; Tokuda, Masamitsu ; Uchida, Naoya

  • Author_Institution
    Nippon Telegraph and Telephone Public Corporation, Ibaraki, Japan
  • Volume
    2
  • Issue
    2
  • fYear
    1984
  • fDate
    4/1/1984 12:00:00 AM
  • Firstpage
    108
  • Lastpage
    115
  • Abstract
    An optical directional coupler in which a TeO2acoustooptical deflector (AOD) is employed has been designed and developed for use in an optical time-domain reflectometer (OTDR). A low round-trip insertion loss of 4.6 dB and low crosstalk of below -48 dB were attained for the fabricated coupler. Signals of large amplitude, such as Fresnel reflection, could be suppressed to less than - 33 dB by switching of the optical directional coupler. Amplitude fluctuation of the back-scattered signal due to polarization fluctuation in single-mode fibers is reduced to a negligible extent.
  • Keywords
    Acoustooptic couplers; Optical fiber measurements; Optical reflection; Directional couplers; Fluctuations; Fresnel reflection; Insertion loss; Optical crosstalk; Optical design; Optical fiber couplers; Optical fiber polarization; Optical losses; Time domain analysis;
  • fLanguage
    English
  • Journal_Title
    Lightwave Technology, Journal of
  • Publisher
    ieee
  • ISSN
    0733-8724
  • Type

    jour

  • DOI
    10.1109/JLT.1984.1073589
  • Filename
    1073589
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1115463