• DocumentCode
    1489789
  • Title

    Heterodyne Method for Time Resolved Spectral Analysis of Fast Laser Wavelength Switching

  • Author

    Engelstaedter, J.P. ; Roycroft, B. ; Peters, F.H. ; Corbett, B.

  • Volume
    21
  • Issue
    20
  • fYear
    2009
  • Firstpage
    1517
  • Lastpage
    1519
  • Abstract
    We present a highly sensitive heterodyne method for time resolved optical spectrum analysis of fast laser wavelength switching. The method achieves signal-to-noise ratios in excess of 50 dB and allows, for the first time, the direct measurement of the dynamic sidemode suppression ratio during fast laser channel transitions. Wavelength range and accuracy are determined by the reference external cavity laser, while temporal and wavelength resolution are set by electronic filtering.
  • Keywords
    Filtering; Laser transitions; Optical filters; Optical mixing; Optical sensors; Signal resolution; Signal to noise ratio; Spectral analysis; Time measurement; Wavelength measurement; Dynamic sidemode suppression ratio (SMSR); heterodyning; laser measurements; time resolved spectra;
  • fLanguage
    English
  • Journal_Title
    Photonics Technology Letters, IEEE
  • Publisher
    ieee
  • ISSN
    1041-1135
  • Type

    jour

  • DOI
    10.1109/LPT.2009.2028895
  • Filename
    5272818
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1489789