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Opt Express. 2011 Dec 12;19(26):B567-73. doi: 10.1364/OE.19.00B567.

2.56 Tbit/s/ch polarization-multiplexed DQPSK transmission over 300 km using time-domain optical Fourier transformation.

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  • 1Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Sendai, 980-8577 Japan. gpy@riec.tohoku.ac.jp

Abstract

We demonstrate a 2.56 Tbit/s/ch polarization-multiplexed single-carrier transmission over 300 km using subpicosecond DQPSK signals. We adopted an ultrafast time-domain optical Fourier transformation technique to reduce waveform distortions. For such an ultrashort optical pulse, depolarization components resulting from second-order polarization-mode dispersion (PMD) become a dominant factor as regards signal distortion because of the broad signal bandwidth. The influence of inter-polarization crosstalk induced by second-order PMD, is presented in detail.

© 2011 Optical Society of America

PMID:
22274072
[PubMed]
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