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

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5 Author(s)
Ozdur, I. ; Coll. of Opt. & Photonics, Univ. of Central Florida, Orlando, FL ; Ozharar, S. ; Quinlan, F. ; Mandridis, D.
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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 ~60 dB. To our knowledge, this is the highest dynamic extinction ratio measurement method reported to date for high-speed optical modulators.

Published in:

Photonics Technology Letters, IEEE  (Volume:20 ,  Issue: 24 )