An Interferometric Method for High Extinction Ratio Measurements With 60-dB Dynamic Range


ÖZDÜR İ. T. , Ozharar S., Quinlan F., Mandridis D., Delfyett P. J.

IEEE PHOTONICS TECHNOLOGY LETTERS, vol.20, pp.2075-2077, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 20
  • Publication Date: 2008
  • Doi Number: 10.1109/lpt.2008.2006509
  • Title of Journal : IEEE PHOTONICS TECHNOLOGY LETTERS
  • Page Numbers: pp.2075-2077

Abstract

In this letter, we introduce a novel interferometric method for dynamic extinction ratio measurement of temporally demultiplexed pulses. A high extinction intensity modulator is used in order to temporally demultiplex the pulse train. The resulting extinction ratio is measured to be 44 dB. Our method has a dynamic range of similar to 60 dB. To our knowledge, this is the highest dynamic extinction ratio measurement method reported to date for high-speed optical modulators.